@sharktagging - UMiami Shark Research

Shark Research & Conservation Program (SRC) • University of Miami • RSMAS • Directed by Dr. Neil Hammerschlag @drneilhammer
http://sharktagging.com/
Advertisement
We currently have research being carried out in South Africa by one of our MS students, @trishalbano7. Periodically, Baited Remote Underwater Video devices are deployed to survey the underwater area as a noninvasive method. Here, a common octopus (Octopus vulgaris) attaches itself to our BRUV in attempt to suck the sardines out of the bait crate while on deployment in South Africa. The common octopus is the most highly occurring species of octopus in South African waters. Aside from sharks, they are one of the most common animals we see on our BRUV footage in South Africa! In this clip, you can see the octopus reach out to fend off a rock cod with its tentacle in order to maintain dominance over the bait crate. Octopus are highly intelligent and territorial creatures and will aggressively defend their domain, which in this case was the cylinder filled with bait. They live in crevices and holes in rocky bottoms and feed on shellfish and other invertebrates. .
.
.{: @trishalbano7 for @sharktagging } .
.
.
#shark #sharks #fish #fishing #miami #florida #science #sharkresearch #research #ocean #saltlife #water #conservation #nature #wildlife #nofilter #ig #sharkweek #instalike #instalove #photooftheday #picoftheday #uwphoto #reef  #BRUV #octopus #southafrica #cod #underwatervideo #uwphotography
UMiami Shark Research - @sharktagging Instagram Profile - inst4gram.com
sharktagging
11

We currently have research being carried out in South Africa by one of our MS students, @trishalbano7. Periodically, Baited Remote Underwater Video devices are deployed to survey the underwater area as a noninvasive method. Here, a common octopus (Oc

South Africa
Happy #SharkHumorSunday!Animals live in a 3D world and depend on their senses for orientation and navigation, which is crucial for hunting and fleeing. The process is far from simple. Humans, for example, use many visual clues to judge relative distance like the shape of an object or the clarity. We can determine the direction sound originated by which ear first hears it, as subtle as the differences may be. Sharks possess the same senses as humans- smell, taste, hearing, touch and sight- but they also possess additional senses, making them very impressive predators. Sharks can determine the direction a smell is coming from (like smelling in stereo) as well as hear tones far lower than humans. Eyesight varies by species, but each shark has adapted vision based on their habitat. Sharks possess taste buds all over their mouths and will often give “taste-tests” before fully ingesting meals. Sharks possess ampullae of Lorenzini, small receptor cells that allow them to sense electrical fields given off by their prey. Like other fish, they also possess a lateral line on both sides of their body that alerts them to the displacement of water, either from potential prey or predator. By themselves, none of a shark's sense organs would be adequate for effective hunting. But the combination of all these senses are what make sharks an incomparable predator.
.
.
.{: @ohdakuwaqa} .
.
.
#shark #sharks #fish #fishing #miami #florida #science #sharkresearch #research #ocean #saltlife #water #conservation #nature #wildlife #nofilter #ig #sharkweek #instalike #instalove #photooftheday #picoftheday #uwphoto #reef #funny #meme #lol #funnymemes #humor
UMiami Shark Research - @sharktagging Instagram Profile - inst4gram.com
sharktagging
6

Happy #sharkhumorsunday !Animals live in a 3D world and depend on their senses for orientation and navigation, which is crucial for hunting and fleeing. The process is far from simple. Humans, for example, use many visual clues to judge relative dista

Shark Research at University of Miami
Are you a high school student passionate about shark research and conservation? Are you looking for an opportunity to expand your field and laboratory skills? Join us through the University of Miami Summer Scholars program! There are two sections available: 1. A 3 credit course in Shark Behavioral Ecology and Conservation; 2. A non-credit academy focusing on developing field and laboratory skills in shark conservation biology. 
Earn 3 college credits during our three week course where students learn core concepts of shark behavioral ecology and biology. These concepts will be used to link shark behavioral ecology to its consequences for conservation and management. Students will be given the unique opportunity to interact with and be trained in advanced technologies used to study sharks. Through in-class exercises and demonstrations, students will work with real shark tracking data and learn how to analyze movements with GIS computer software. At the conclusion of the course, students will participate in a shark tagging trip. 
Our second option, the non-credit Shark Research & Conservation Academy, is a two week field research experience to conduct cutting-edge shark research through both boat and lab based research experiences. Work side-by-side with our team to collect data and learn how we use this information to advance shark research and conservation. 
For information on both programs, visit our story or miami.edu/ssp and use promo code SHARKLOVE for a discount on your application fee! .
.
.{: @josh_liberman, @sharkling_nic, @gammonkoval} .
.
.
#shark #sharks #fish #fishing #miami #florida #science #sharkresearch #research #ocean #saltlife #water #conservation #nature #wildlife #nofilter #ig #sharkweek #instalike #instalove #photooftheday #picoftheday #uwphoto #reef #summer #summercamp #collegelife
UMiami Shark Research - @sharktagging Instagram Profile - inst4gram.com
sharktagging
11

Are you a high school student passionate about shark research and conservation? Are you looking for an opportunity to expand your field and laboratory skills? Join us through the University of Miami Summer Scholars program! There are two sections ava

University of Miami's Rosenstiel School of Marine & Atmospheric Science
New paper alert! In collaboration with Chris & Monique Fallows and Lacey Williamson of @apexsharkexpeditions, we documented unexpected consequences following the decline of great white sharks from an area off South Africa. The study found that the disappearance of great whites has led to the emergence of sevengill sharks, a top predator from a different habitat. A living fossil, sevengill sharks closely resemble relatives from the Jurassic period, unique for having seven gills instead of the typical five in most other sharks. The study suggested that the appearance of sevengill sharks at Seal Island was due to the disappearance of great whites, thereby allowing sevengills to exploit the area without risk of predation from great white sharks or competition with them for shared prey.
This 18-year study provided new insights into the diverse ways that a marine ecosystem can be altered following the loss of an apex predator. For the full video and paper check out our story! .
.
.{:
Seal, research, white shark footage: Discovery Channel & Jeff Kurr} .
.
.
#shark #sharks #fish #fishing #miami #florida #science #sharkresearch #research #ocean #saltlife #water #conservation #nature #wildlife #nofilter #ig #sharkweek #instalike #instalove #photooftheday #picoftheday #uwphoto #reef #greatwhiteshark #greatwhite #sealisland
UMiami Shark Research - @sharktagging Instagram Profile - inst4gram.com
sharktagging
9

New paper alert! In collaboration with Chris & Monique Fallows and Lacey Williamson of @apexsharkexpeditions , we documented unexpected consequences following the decline of great white sharks from an area off South Africa. The study found that the di

Seal Island
While these two sharks may look wildly similar, they are actually two different species! The blacktip shark (Carcharhinus limbatus) is a robust shark with a moderately long, pointed snout. Their first dorsal fin is slightly posterior from their pectoral fins and they lack an interdorsal ridge. The pectoral fins, first and second dorsal fins, pelvic fins and lower caudal tail are all black tipped, although this coloring tends to fade with age.
The blacknose shark (Carcharhinus acronotus) gets its name from the dark blotch on the tip of its snout, which often fades as they mature. They possess streamlined shapes and mature to just over 4 feet in length. This species also lacks an interdorsal ridge, and the caudal peduncle lacks a keel. Black or dusky tips on the second dorsal fin and dorsal caudal lobe are present. 
Can you identify which shark is the blacknose and which shark is the blacktip in this photo?
.
.
.{: @josh_liberman & @chrisschenker} .
.
.
#shark #sharks #fish #fishing #miami #florida #science #sharkresearch #research #ocean #saltlife #water #conservation #nature #wildlife #nofilter #ig #sharkweek #instalike #instalove #photooftheday #picoftheday #uwphoto #reef #blacktipshark #blacknoseshark #guess #babyshark #babyanimal
UMiami Shark Research - @sharktagging Instagram Profile - inst4gram.com
sharktagging
16

While these two sharks may look wildly similar, they are actually two different species! The blacktip shark (Carcharhinus limbatus) is a robust shark with a moderately long, pointed snout. Their first dorsal fin is slightly posterior from their pecto

Miami, Florida
Today is International Day of Women and Girls in Science! Did you know that our team is 78% female and over 87% of our graduate students are women? To celebrate today we are recognizing the incredible women of SRC who work tirelessly towards the mission of shark research and conservation, while also inspiring the next generation of female scientists. Meet the amazing women of our team! .
.
According to the National Science Foundation, women are an underrepresented group in the sciences- making up only 25% of all STEM careers, despite composing 50% of the workforce. A 2011 study showed that girls presented with primarily male examples of scientists were less likely to think they could be successful in STEM careers. Here at SRC, we want to encourage and inspire the next generation of women scientists! We established the Females In the Natural Sciences program (FINS) to address this gender disparity and encourage girls to pursue STEM careers. We provide young girls with hands-on experience in shark research through a day of shark tagging run by an all female crew. For more information on our FINS program visit our website sharktagging.com/participate. We recognize that today’s students are the scientists and conservationists of tomorrow, and we need our nation’s girls to be part of the next generation’s problem solvers.
.
.
.{: all photos and videos by SRC photographers; video created by @thetravelingchelss} .
.
.
#shark #sharks #fish #fishing #miami #florida #science #sharkresearch #research #ocean #saltlife #water #conservation #nature #wildlife #nofilter #ig #sharkweek #instalike #instalove #photooftheday #picoftheday #uwphoto #reef #womeninscience #womeninscienceday #internationalwomensday #womenandgirlsinscience
UMiami Shark Research - @sharktagging Instagram Profile - inst4gram.com
sharktagging
11

Today is International Day of Women and Girls in Science! Did you know that our team is 78% female and over 87% of our graduate students are women? To celebrate today we are recognizing the incredible women of SRC who work tirelessly towards the miss

Miami, Florida
Advertisement
Happy #SatTagSaturday! We have an update on one of our newly tagged tiger sharks. During our most recent expedition to Tiger Beach, Bahamas we deployed a satellite tag on this 285 cm female tiger shark to track her movements. In the 28 days we’ve been watching her movements, she has already traveled over 500 miles and is now 120 miles off the coast of Jacksonville, FL. Her movements are similar to other female tiger sharks we’ve tagged from Tiger Beach, who seem to follow the coast into deeper waters before returning back to The Bahamas months later. We’re curious to see where this large female goes next; if you want to follow her movements head to our website sharktagging.com to spy on her and our other satellite tagged sharks! .
.
.{: photo by @roldanpao} .
.
.
#shark #sharks #fish #fishing #miami #florida #science #sharkresearch #research #ocean #saltlife #water #conservation #nature #wildlife #nofilter #ig #sharkweek #instalike #instalove #photooftheday #picoftheday #uwphoto #reef #tigerbeach #bahamas #jacksonville #tigershark #tigersharks
UMiami Shark Research - @sharktagging Instagram Profile - inst4gram.com
sharktagging
9

Happy #sattagsaturday ! We have an update on one of our newly tagged tiger sharks. During our most recent expedition to Tiger Beach, Bahamas we deployed a satellite tag on this 285 cm female tiger shark to track her movements. In the 28 days we’ve bee

Jacksonville, Florida
A bull shark is safely released by SRC Director, @drneilhammer. Bull sharks grow to an average total length of 340 cm, with the largest reported total length 400 cm. Like most of the requiem sharks in the genus Carcharhinus, bull sharks are plain grey above, with a pale to white underbelly- this is called countershading. They have broad, rounded snouts and small eyes relative to their body size. Bull sharks occur in tropical to subtropical coastal waters, worldwide, and they also occur in a number of river systems and some freshwater lakes! Coastal lagoons, river mouths, and other low-salinity estuaries are common nursery habitats for juveniles. .
.
.{: @josh_liberman}
.
.
.
#shark #sharks #fish #fishing #miami #florida #science #sharkresearch #research #ocean #saltlife #water #conservation #nature #wildlife #nofilter #ig #sharkweek #instalike #instalove #photooftheday #picoftheday #uwphoto #reef #bullshark #sequence #babyanimal #babyshark #bullsharks
UMiami Shark Research - @sharktagging Instagram Profile - inst4gram.com
sharktagging
6

A bull shark is safely released by SRC Director, @drneilhammer. Bull sharks grow to an average total length of 340 cm, with the largest reported total length 400 cm. Like most of the requiem sharks in the genus Carcharhinus, bull sharks are plain gre

Miami, Florida
Advertisement
Do you recognize all of the species our BRUVS recorded in this video yesterday? BRUVS are Baited Remote Underwater Video Surveillance devices that we use to spy on the underwater world without disturbing them with our presence and possibly altering their behavior. Yesterday, members of our team deployed BRUVS to record for several hours while they were shark tagging nearby. The team was searching for nurse sharks in the area as part of an ongoing research program that acoustically tracks the movements of sharks here in Biscayne Bay. They successfully tagged and released a large male nurse shark that had recently mated, and the recording BRUVS picked up possibly a second nurse shark in the area. In addition to the nurse shark (accompanied by a small remora), you can also spot a large barracuda and a diving cormorant! .
.{: @sharktagging} .
.
.
#shark #sharks #fish #fishing #miami #florida #science #sharkresearch #research #ocean #saltlife #water #conservation #nature #wildlife #nofilter #ig #sharkweek #instalike #instalove #photooftheday #picoftheday #uwphoto #reef #nurseshark #barracuda #cormorant #seabird #bruv #underwaterphotography
UMiami Shark Research - @sharktagging Instagram Profile - inst4gram.com
sharktagging
30

Do you recognize all of the species our BRUVS recorded in this video yesterday? BRUVS are Baited Remote Underwater Video Surveillance devices that we use to spy on the underwater world without disturbing them with our presence and possibly altering t

Miami, Florida
Sandbar sharks (Carcharhinus plumbeus) have a high fin-to-body weight ratio, unfortunately making them a target for fishing. In addition to the significant impact the sandbar shark has on commercial fisheries, it is also valuable to recreational fishermen as a game fish. Increased recreational fishing and a heightened demand for shark fins, as well as shark meat, in the 1980’s had a profound adverse effect on the numbers of sandbar sharks in the southwestern Atlantic. It has been proposed that the population of sandbar sharks in this area dropped by two-thirds between the 1970’s and early 1990’s. However, there has been a slight rise in population numbers in recent years directly as a result of the implementation of fishery regulations. In addition, it is believed that there has been a decrease in predation of juvenile sandbar sharks in nursery grounds by larger sharks. This shark is currently listed as Vulnerable by the IUCN Red List. .
.{: @sharkling_nic} .
.
.
#shark #sharks #fish #fishing #miami #florida #science #sharkresearch #research #ocean #saltlife #water #conservation #nature #wildlife #nofilter #ig #sharkweek #instalike #instalove #photooftheday #picoftheday #uwphoto #reef  #sandbarshark #underwaterphotography #underwater #uwphotography
UMiami Shark Research - @sharktagging Instagram Profile - inst4gram.com
sharktagging
5

Sandbar sharks (Carcharhinus plumbeus) have a high fin-to-body weight ratio, unfortunately making them a target for fishing. In addition to the significant impact the sandbar shark has on commercial fisheries, it is also valuable to recreational fish

Miami, Florida
Happy #SharkHumorSunday! The carpet sharks are a diverse group of sharks inhabiting coral and rocky reefs, with the greatest species richness occurring in the Indo-West Pacific region.  Carpet sharks derive their common name from the fact that many species have a mottled appearance with intricate patterns reminiscent of carpet designs. Many species are attractively patterned with stripes or spots. All orectoloboids share the following characteristics: their mouth completely in front of their eyes, both dorsal fins without spines, five gill slits and the presence of an anal fin. There are 36 species in this order of of sharks, with the largest being the whale shark growing to lengths of over 40 feet, and the smallest being the barbelthroat carpet shark reaching only one foot long! .
.{: @thelifeofsharks} .
.
.
#shark #sharks #fish #fishing #miami #florida #science #sharkresearch #research #ocean #saltlife #water #conservation #nature #wildlife #nofilter #ig #sharkweek #instalike #instalove #photooftheday #picoftheday #uwphoto #reef #meme #humor #funny #funnymemes
UMiami Shark Research - @sharktagging Instagram Profile - inst4gram.com
sharktagging
4

Happy #sharkhumorsunday ! The carpet sharks are a diverse group of sharks inhabiting coral and rocky reefs, with the greatest species richness occurring in the Indo-West Pacific region.  Carpet sharks derive their common name from the fact that many s

Shark Research at University of Miami
New paper alert! With the exception of lamnid sharks such as the white, porbeage and mako sharks, other species are thought to be cold-blooded, with their body temperatures dependent on surrounding water temperatures. Despite often being removed from the water during fisheries interactions, little is known about the potential effects of changing temperatures and solar radiation experienced by sharks during air exposure, and if such scenarios may compromise their ability to regulate their body temperatures, thus impacting their survival. In this study, we used thermal imaging to measure external body temperature of 10 different shark species exposed to air on capture. Although cold blooded, to our surprise, different species exhibited significant differences in in heat distribution and warming along the body surface. Moreover, these body temperature patterns were significantly impacted by both environmental factors (water temperature at capture) as well as biological traits (shark size and body region). Besides revealing differences in heat regulation across the body, our results have implications for sharks exposed to air during fishing operations; specifically that changes in body temperatures associated with air exposure may affect their post-release health and survival. Check out our story for the full paper! .
.{: @gammonkoval} .
.
.
#shark #sharks #fish #fishing #miami #florida #science #sharkresearch #research #ocean #saltlife #water #conservation #nature #wildlife #nofilter #ig #sharkweek #instalike #instalove #photooftheday #picoftheday #uwphoto #reef 
#hammerhead #blacktipshark #greathammerhead #scientificpaper
UMiami Shark Research - @sharktagging Instagram Profile - inst4gram.com
sharktagging
3

New paper alert! With the exception of lamnid sharks such as the white, porbeage and mako sharks, other species are thought to be cold-blooded, with their body temperatures dependent on surrounding water temperatures. Despite often being removed from

Miami, Florida
#TBT to our 2018 paper “Predator declines and morphological changes in prey: evidence from coral reefs depleted of sharks”! In this study, an international team of researchers, led by our own @drneilhammer, explored how the removal of apex predators may impact the characteristics of their prey species. Watch the video above to hear @drneilhammer explain how the study was conducted and some of its surprising findings! {: @bigbluedesert, Savannah Geary, Sarah Hirth, Marcelo Lopes, and Megan Vanderah}
.
.
.
 #shark #sharks #fish #fishing #miami #florida #science #sharkresearch #research #ocean #saltlife #water #conservation #nature #wildlife #nofilter #ig #sharkweek #instalike #instalove #videooftheday #video #australia #hunter #reef #study #paper #explore #discover
UMiami Shark Research - @sharktagging Instagram Profile - inst4gram.com
sharktagging
10

#tbt to our 2018 paper “Predator declines and morphological changes in prey: evidence from coral reefs depleted of sharks”! In this study, an international team of researchers, led by our own @drneilhammer , explored how the removal of apex predators

Australia
Comments

@cassidybrooke15 I literally wrote an essay on this entire paper. I loved it!

@drneilhammer @fitnesschic_uc so cool. Thanks

At the beginning of January, members of our research team, led by our director @drneilhammer, journeyed to Tiger Beach in the Bahamas. The team set out to study pregnant tiger sharks. Our previous research suggested that female tiger sharks exhibit strong site fidelity to this area for considerable periods of time. We hypothesize that Tiger Beach functions as both a refuge habitat for females to avoid male mating harassment, and as a gestation ground where gravid females can accelerate embryonic development in warmer waters. On this expedition, our team’s goal was to find pregnant tiger sharks and determine where and when these females are giving birth after leaving Tiger Beach. The results will help determine if pregnant sharks remain in protected waters or migrate to areas where they and the next generation of tiger sharks are vulnerable to fishing and other human threats. In collaboration with the @sulikowskilab we successfully sampled, tagged, and performed ultrasounds on 10 tiger sharks. Using new technologies, we are now currently tracking three pregnant tiger sharks to determine where they give birth, and if their nursery areas are protected. Studying the reproductive behaviors of these top predators is important for effective conservation, and we are excited to be a part of this exciting study. Special thanks to the Herbert W. Hoover Foundation and @seakeepers for supporting this project. .{: @roldanpao} .
.
.
#shark #sharks #fish #fishing #miami #florida #science #sharkresearch #research #ocean #saltlife #water #conservation #nature #wildlife #nofilter #ig #sharkweek #instalike #instalove #photooftheday #picoftheday #uwphoto #reef #bahamas #satellite #pregnantshark #babyshark
UMiami Shark Research - @sharktagging Instagram Profile - inst4gram.com
sharktagging
9

At the beginning of January, members of our research team, led by our director @drneilhammer , journeyed to Tiger Beach in the Bahamas. The team set out to study pregnant tiger sharks. Our previous research suggested that female tiger sharks exhibit s

Happy #SharkHumorSunday! The chances of being attacked and killed by a shark are about 1 in 3.75 million… thats less than your chance of dying from a lightning strike or excessive cold. In fact, your own home poses an even greater threat to you than sharks. More people die each year from accidents involving common things such as toilets, air fresheners, beds and buckets. The majority of the population will go their entire life without ever seeing a shark in the wild, so if you do see one consider yourself lucky! Sharks symbolize a healthy ecosystem, and an absence of sharks is the real cause for concern. .
.{: @sharkcartoons} .
.
.
#shark #sharks #fish #fishing #miami #florida #science #sharkresearch #research #ocean #saltlife #water #conservation #nature #wildlife #nofilter #ig #sharkweek #instalike #instalove #photooftheday #picoftheday #uwphoto #reef #sharkhumor #funny #lol #memes
UMiami Shark Research - @sharktagging Instagram Profile - inst4gram.com
sharktagging
29

Happy #sharkhumorsunday ! The chances of being attacked and killed by a shark are about 1 in 3.75 million… thats less than your chance of dying from a lightning strike or excessive cold. In fact, your own home poses an even greater threat to you than

Shark Research at University of Miami
Today our team encountered a scalloped hammerhead shark, which is rare for our lab as we more often encounter great hammerheads! Hammerhead sharks are an unmistakable group of sharks that can be distinguished by the shape of their heads- called cephalofoils. Adult scalloped hammerheads occur singly, in pairs, or in small schools while young scalloped hammerhead sharks have been known to live in large schools. In some locations, schools of these sharks have been observed migrating towards the poles during the summer months while permanent resident populations exist in other areas. Male and female scalloped hammerheads may also segregate during certain times of their life history, and in the Gulf of California there are aggregations of predominantly female sharks ranging from immature to adult. An exciting start to the new year! .
.{: @josh_liberman} .
.
.
#shark #sharks #fish #fishing #miami #florida #science #sharkresearch #research #ocean #saltlife #water #conservation #nature #wildlife #nofilter #ig #sharkweek #instalike #instalove #photooftheday #picoftheday #uwphoto #reef  #hammerheadshark #hammerheadsharks
UMiami Shark Research - @sharktagging Instagram Profile - inst4gram.com
sharktagging
6

Today our team encountered a scalloped hammerhead shark, which is rare for our lab as we more often encounter great hammerheads! Hammerhead sharks are an unmistakable group of sharks that can be distinguished by the shape of their heads- called cepha

Miami, Florida
#TBT to witnessing these large tiger sharks feast on a whale carcass off the coast of Key Largo last summer! At least five tiger sharks, ranging in length from 10 to 15 feet, were devouring the whale's remains. A rare opportunity to observe a process so crucial to the ecology of the ocean, our director @drneilhammer and team members carefully watched the encounter from both above and in the water.  Like an old tree falling in a forest, a dead whale that sinks to the ocean floor provides years of food and habitat for a vast range of creatures that scavenge its tissue and bones, a process facilitated by the sharks. The sharks essentially recycled the whale back into the food web, taking turns biting off large chunks. 
Check out our latest instagram story for the full news article! .
.
.{: @alexanstettphotography} .
.
.
#shark #sharks #fish #fishing #miami #florida #science #sharkresearch #research #ocean #saltlife #water #conservation #nature #wildlife #nofilter #ig #sharkweek #instalike #instalove #photooftheday #picoftheday #uwphoto #reef
UMiami Shark Research - @sharktagging Instagram Profile - inst4gram.com
sharktagging
2

#tbt to witnessing these large tiger sharks feast on a whale carcass off the coast of Key Largo last summer! At least five tiger sharks, ranging in length from 10 to 15 feet, were devouring the whale's remains. A rare opportunity to observe a process

Key Largo, Florida
This juvenile tiger shark may look like he’s winking at the camera, but what you see is his nictitating membrane flashing over his eye. The nictitating membrane is a thin, tough membrane or “inner eyelid” found in many species of sharks. Unlike the transparent membrane of terrestrial vertebrates, the nictitating membrane of sharks is dense, opaque, and covered with placoid scales. It serves as a protection from injury, especially prior to a feeding event where prey may inflict damage to the shark. Although many visual features are shared across elasmobranchs, there are even more that are unique to various species. Some sharks have fixed eyelids, while others, like this tiger shark have a nictitating membrane. They might also “blink” to control the amount of bright light entering their eye at a given time. Sharks have evolved over several hundred million years and presently occupy a variety of habitats, so it comes to no surprise that their ocular specializations have adapted over time.
.
.
.
.{: @sharkling_nic} .
.
.
#shark #sharks #fish #fishing #miami #florida #science #sharkresearch #research #ocean #saltlife #water #conservation #nature #wildlife #nofilter #ig #sharkweek #instalike #instalove #photooftheday #picoftheday #uwphoto #reef  #tigershark #babyanimal #babyshark #eyes #tigersharks
UMiami Shark Research - @sharktagging Instagram Profile - inst4gram.com
sharktagging
6

This juvenile tiger shark may look like he’s winking at the camera, but what you see is his nictitating membrane flashing over his eye. The nictitating membrane is a thin, tough membrane or “inner eyelid” found in many species of sharks. Unlike the t

Miami, Florida