@sharktagging - UMiami Shark Research

Shark Research & Conservation Program (SRC) • University of Miami • RSMAS • Directed by Dr. Neil Hammerschlag @drneilhammer
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Happy #SharkHumorSunday! Shark Week is only one week away…are you excited? While you’re watching this year’s episodes, remember the important overall message. Shark populations are crucial to healthy ecosystems and without them our oceans would be negatively affected. You’ll see our lab in two episodes this year! First on July 30th at 10pm in Air Jaws Strikes Back, then on August 2nd at 9pm for Andrew Mayne Ghost Diver. Our lab is committed to contributing to shark science and helping spread awareness about the current issues these species face. Tune in to Shark Week to learn about these incredible animals! .
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{: @sharkcartoons} .
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#shark #sharks #fish #fishing #miami #florida #science #sharkresearch #research #ocean #saltlife #water #conservation #nature #wildlife #nofilter #ig #sharkweek #instalike #instalove #photooftheday #picoftheday #uwphoto #reef #sharkweek #sharkweek2019 #discovery #greatwhite
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Happy #sharkhumorsunday ! Shark Week is only one week away…are you excited? While you’re watching this year’s episodes, remember the important overall message. Shark populations are crucial to healthy ecosystems and without them our oceans would be ne

Shark Research at University of Miami
Happy #SatTagSaturday! Our satellite tagged tiger shark, Steph, is still hanging out in Venezuela. Since we last updated her location, she has moved even closer inshore and is currently one mile off the coast. After we tagged her in Tiger Beach, Bahamas, she has already traveled over 3,000 miles in 189 days! Steph is a unique shark because she is our only satellite tagged tiger shark to migrate south. Will she continue to use these warm coastal waters, or will she return to Tiger Beach like our other tigers? Follow Steph and others on our website sharktagging.com or adopt and name your own shark to track! .
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{: @drneilhammer} .
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#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 #tigersharks #venezuela
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Happy #sattagsaturday ! Our satellite tagged tiger shark, Steph, is still hanging out in Venezuela. Since we last updated her location, she has moved even closer inshore and is currently one mile off the coast. After we tagged her in Tiger Beach, Baha

Venezuela
#tbt to our FINS trip in March! FINS is our Females In the Natural Sciences program. The program provides girls with hands-on experience in marine science as shark research volunteers with our team. During their day with us, these young girls helped tag and release sharks with an all-female crew! The need for impactful STEM-related programs is particularly acute in Miami-Dade County, so we hope to improve the retention of women in STEM fields by providing these girls with exciting and informal sciences experiences where they can seek inspiration from the women on our team. .
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{: @juliasaltzmanphotography} .
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#shark #sharks #fish #fishing #miami #florida #science #sharkresearch #research #ocean #saltlife #water #conservation #nature #wildlife #nofilter #ig #sharkweek #instalike #instalove #photooftheday #picoftheday #uwphoto #reef #STEM #womeninstem #womeninscience #throwback
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#tbt to our FINS trip in March! FINS is our Females In the Natural Sciences program. The program provides girls with hands-on experience in marine science as shark research volunteers with our team. During their day with us, these young girls helped

Miami, Florida
Did you catch our director @drneilhammer on @natgeo‘s #sharkfest last night? During the episode “Great Shark Chow Down,” some of our previous white shark research was showcased. We used a novel geographic profiling tool that was originally developed to analyze serial crime, to investigate spatial patterns of shark predation events on Cape fur seals in South Africa. We concluded that sharks appear to possess a well-defined search base on the outskirts of the seal’s primary entry-exit point. Experience and spatial learning could play a role in hunting site selection by white sharks, and larger (and more experienced) white sharks may restrict their movements to smaller areas where they have previously made successful kills of seals.To read the research behind the show, head to our story! 
The episode airs tonight at 9:00pm for Canada! .
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{: @drneilhammer} .
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#shark #sharks #fish #fishing #miami #florida #science #sharkresearch #research #ocean #saltlife #water #conservation #nature #wildlife #nofilter #ig #sharkweek #instalike #instalove #photooftheday #picoftheday #uwphoto #reef #sharkweek #natgeo #greatwhite #greatwhiteshark
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Did you catch our director @drneilhammer on @natgeo ‘s #sharkfest last night? During the episode “Great Shark Chow Down,” some of our previous white shark research was showcased. We used a novel geographic profiling tool that was originally developed

For this #SharkHumorSunday we are also celebrating Shark Awareness Day! While sharks are impressive predators, they are more threatened by humans than we are by them. Sharks play an essential role in keeping our oceans healthy and productive, so it is imperative that we better understand and conserve these at-risk species. 
On this #SharkAwarenessDay, we ask that all of our followers share something they know about sharks with a friend! Help us clear up the misconceptions about sharks.
What is your favorite sharky fact? .
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{: @thelifeofsharks} .
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#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 #sharkawareness
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For this #sharkhumorsunday we are also celebrating Shark Awareness Day! While sharks are impressive predators, they are more threatened by humans than we are by them. Sharks play an essential role in keeping our oceans healthy and productive, so it i

Shark Research at University of Miami
Happy #SatTagSaturday! A female tiger shark that we satellite tagged in January has already travelled over one thousand miles! She left the Bahamas and travelled up the east coast and is currently pinging 35 miles off the coast of New York. Like the big city itself, the waters off New York are incredibly diverse. Species reported in these waters include mako, thresher, sand tiger, blue, great whites, and yes, tiger sharks! Do you think our tiger shark wanted to take a trip to the Big Apple, or will she keep moving north? .
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{: shark photo by @roldanpao} .
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#shark #sharks #fish #fishing #miami #florida #science #sharkresearch #research #ocean #saltlife #water #conservation #nature #wildlife #nofilter #ig #sharkweek #instalike #instalove #photooftheday #picoftheday #uwphoto #reef
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Happy #sattagsaturday ! A female tiger shark that we satellite tagged in January has already travelled over one thousand miles! She left the Bahamas and travelled up the east coast and is currently pinging 35 miles off the coast of New York. Like the

New York, New York
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#tbt to our scientific paper released in 2017 “Bioaccumulation and biomagnification of mercury and methylmercury in four sympatric coastal sharks in a protected subtropical lagoon.” We compared total mercury and methylmercury from muscle with length, comparative isotopic niche, and diet among blacknose, blacktip, bull and lemon sharks. Mercury in blacknose and blacktip sharks increased significantly with size, whereas bull and lemon sharks had a high variance in mercury relative to size. The bioaccumulation patterns discovered in bull and lemon sharks may be related to the high variability over mercury concentrations to occur in upper trophic level organisms with diverse diets. Bull sharks have one of the most diverse diets feeding on teleosts and elasmobranchs, potentially explaining the high variance in our study. In addition to diet, differences of temperature and associated metabolism of ectotherms may result in differences of methylmercury accumulation. We also found that, with a few exceptions in individual lemon sharks, most concentrations of MeHg in shark muscle exceeded safe consumption limits set by governmental and human health organizations. Read the full paper in our story! .
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{: @drneilhammer} .
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#shark #sharks #fish #fishing #miami #florida #science #sharkresearch #research #ocean #saltlife #water #conservation #nature #wildlife #nofilter #ig #sharkweek #instalike #instalove #photooftheday #picoftheday #uwphoto #reef
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#tbt to our scientific paper released in 2017 “Bioaccumulation and biomagnification of mercury and methylmercury in four sympatric coastal sharks in a protected subtropical lagoon.” We compared total mercury and methylmercury from muscle with length,

Miami, Florida
Blacknose sharks (Carcharhinus acronotus) get their name from the dark spot noticeable at the tip of their snout that fades as the shark matures. Their distribution is limited to the western Atlantic Ocean from North Carolina south to Brazil. As an inshore species, the blackness shark resides in waters of continental shelves over sandy and coral bottoms and are known to form large schools segregated by both size and sex. These sharks are relatively small, reaching a maximum size under 5 feet in length!
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{: @gammonkoval} .
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#shark #sharks #fish #fishing #miami #florida #science #sharkresearch #research #ocean #saltlife #water #conservation #nature #wildlife #nofilter #ig #sharkweek #instalike #instalove #photooftheday #picoftheday #uwphoto #reef #blacknoseshark #northcarolina #brazil #underwaterphotography
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Blacknose sharks (Carcharhinus acronotus) get their name from the dark spot noticeable at the tip of their snout that fades as the shark matures. Their distribution is limited to the western Atlantic Ocean from North Carolina south to Brazil. As an i

Miami, Florida
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Bull sharks (Carcharhinus leucas) can grow to a total length of about 340 cm and are distinguished by their broad bodies. While these sharks are relatively large, they have small eyes compared to other carcharhinid sharks which suggests that vision may not be as important for this species. Bull sharks are commonly found in turbid waters, often entering estuaries, bays, harbors, lagoons and river mouths. While bull sharks seemingly prefer shallow coastal waters less than 30 m deep, they are also found as deep as 150 m. .
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{: @sharkling_nic} .
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#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 #bullsharks #eyes
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Bull sharks (Carcharhinus leucas) can grow to a total length of about 340 cm and are distinguished by their broad bodies. While these sharks are relatively large, they have small eyes compared to other carcharhinid sharks which suggests that vision m

Miami, Florida
Happy #SharkHumorSunday! There are more than one thousand species of cartilaginous fish- sharks and their relatives, the batoid fishes (skates, rays, guitarfishes, sawfishes) and chimaeras. There are more than 500 species of sharks alone! They range in size from the length of a human hand to sizes more than 30 feet. Shark species come in a variety of colors and feed on a diverse array of prey. Sharks are found in just about every ocean habitat, including the deep sea, open ocean, coral reefs, and under the Arctic ice. It’s important to remember that no matter the species of shark, they all play an important role in our ecosystem. .
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{: @thelifeofsharks} .
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#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 #humor #comic #memes
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Happy #sharkhumorsunday ! There are more than one thousand species of cartilaginous fish- sharks and their relatives, the batoid fishes (skates, rays, guitarfishes, sawfishes) and chimaeras. There are more than 500 species of sharks alone! They range

Shark Research at University of Miami
Introducing our newly named shark, Olivia Eve. This beautiful tiger shark was adopted on behalf of collective donors in memory of Olivia Wigon, a UM undergraduate and SRC intern who passed away a month ago. 
Olivia was SRC’s Top Performing Intern for 2019, a title that she earned for her dedication to our lab and her hard work. In only two semesters she made herself a valuable asset to our team and quickly became someone we could count on to get the job done. There was no task too great or too small for Olivia. While saddened, it brings us comfort to know that over the last few months and weeks she was thriving as an SRC intern. She was excited, motivated and proud to be a part of our team, working towards a common goal with amazing people.

Olivia left this world too early. She battled depression, and unfortunately passed away by suicide. Olivia is survived by her loving family. Her mother Jennifer, father Timothy, sister Dorothy, and brother Sam wanted to make known her passing with our community as a step toward de-stigmatizing depression. 
Olivia’s imagination and passion spanned oceans, and the world over. There is perhaps no better way we can think of to remember her. Follow Olivia Eve’s journey here where she will continue to inspire us.
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Introducing our newly named shark, Olivia Eve. This beautiful tiger shark was adopted on behalf of collective donors in memory of Olivia Wigon, a UM undergraduate and SRC intern who passed away a month ago. Olivia was SRC’s Top Performing Intern for

Miami, Florida
#tbt to capturing this footage for research in South Africa several months ago. In this clip from a BRUV deployment in South Africa, a spotted gulley shark (Triakis megalopterus) attempts to detach our bait crate in order to eat the sardines from the inside. This species is endemic to the southern African coast and span from Namibia to South Africa. In this BRUV clip, you can clearly see this shark’s namesake: the irregularly spaced spots on the bottom of its body. Spotted gully sharks are usually found in sandy or rocky bottoms in shallow water and feed on crustaceans, cephalopods, and small fishes. .
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{: @sharktagging} .
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#shark #sharks #fish #fishing #miami #florida #science #sharkresearch #research #ocean #saltlife #water #conservation #nature #wildlife #nofilter #ig #sharkweek #instalike #instalove #photooftheday #picoftheday #uwphoto #reef #southafrica #africa #underwatervideo
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#tbt to capturing this footage for research in South Africa several months ago. In this clip from a BRUV deployment in South Africa, a spotted gulley shark (Triakis megalopterus) attempts to detach our bait crate in order to eat the sardines from the

South Africa
Some of our graduate students are trained to perform small surgeries on sharks to implant internal acoustic tags. After making a small incision on the underside of these nurse sharks, an acoustic tag the size of a battery was placed inside and the incision was closed with a few sutures. These acoustic tags will emit a signal to our underwater receivers, which are placed in strategic locations across Biscayne Bay. When we download the data from these receivers, we will be able to estimate metrics such as how resident these sharks are to certain areas and even their home ranges. This information will give us an estimation as to what habitats and areas they use on a daily basis.
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{: @ali_banas} .
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#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 #nursesharks #biscaynebay
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Some of our graduate students are trained to perform small surgeries on sharks to implant internal acoustic tags. After making a small incision on the underside of these nurse sharks, an acoustic tag the size of a battery was placed inside and the in

Miami, Florida
We recently encountered a lemon shark with an oddly shaped first dorsal fin that looks like it sustained injury in the past and has now healed. We do not know when or how this lemon shark was injured, but the shark was in good health and showed no signs of being affected by this injury! 
Studying the healing rates of wild shark species is difficult due to the highly migratory patterns of these large predators and low re-capture rates. 
One area that is able to monitor healing capabilities in sharks is Djibouti in Africa. Seasonal whale shark aggregations make it an interesting sight as the increase in tourism has led to accidental boat strikes to these large sharks. Scientists reviewed incidences from the years 2011 to 2015 and found that lacerations to the fins showed the quickest healing rates, with completely healed scars within one year. Full amputation of fins showed a maximum healing time of one year, but little capacity for tissue regeneration. However, one case of a partially amputated first dorsal fin did show full re-growth of the fin after five years, but this phenomenon has never been recorded before. .
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{: @sharkling_nic} .
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#shark #sharks #fish #fishing #miami #florida #science #sharkresearch #research #ocean #saltlife #water #conservation #nature #wildlife #nofilter #ig #sharkweek #instalike #instalove #photooftheday #picoftheday #uwphoto #reef #lemonshark #lemonsharks
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We recently encountered a lemon shark with an oddly shaped first dorsal fin that looks like it sustained injury in the past and has now healed. We do not know when or how this lemon shark was injured, but the shark was in good health and showed no si

Miami, Florida
Happy #SharkHumorSunday! Shark Week 2019 is less than one month away… are you as excited as we are?! You’ll see our lab featured in a few shows this year and we are excited to show you what new research we’ve been doing. Shark Week only shows a glimpse of the cool research scientists are working on, but we are hard at work every day of the year to help conserve these species. 
To learn more about our current research projects, head to sharktagging.com and keep following us on social media to stay up to date with all of our accomplishments! .
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{: @sharkcartoons} .
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#shark #sharks #fish #fishing #miami #florida #science #sharkresearch #research #ocean #saltlife #water #conservation #nature #wildlife #nofilter #ig #sharkweek #instalike #instalove #photooftheday #picoftheday #uwphoto #reef #sharkweek2019 #sharkweek #funny #comic
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Happy #sharkhumorsunday ! Shark Week 2019 is less than one month away… are you as excited as we are?! You’ll see our lab featured in a few shows this year and we are excited to show you what new research we’ve been doing. Shark Week only shows a glimp

Shark Research at University of Miami
#fbf to our research paper from 2016 that investigated seasonal and life-stage variation in tiger sharks. Advancing knowledge of the reproductive biology and mating systems of these sharks is extremely challenging due to their large size and mobility, however they have been known to display site fidelity in some places. Tiger Beach, Bahamas is a unique area with consistent sightings of large female tiger sharks. While the sex-specific use of this area is unknown, the shallow, warm waters could represent a critical habitat for reproductive events. In our paper, we investigated the reproductive biology of 65 individuals between the years 2011 and 2014.
Our results indicate that Tiger Beach is a high-use site for female tiger sharks of mixed life stages. The results also suggest that Tiger Beach may function as a refuge habitat, allowing females to reach maturity free from male mating harassment, as well as functioning as a gestation ground where gravid females can benefit from year-round calm warm waters, which may reduce the gestation period and accelerate embryo development.
Read the full paper in our story!
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{: @drneilhammer} .
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#shark #sharks #fish #fishing #miami #florida #science #sharkresearch #research #ocean #saltlife #water #conservation #nature #wildlife #nofilter #ig #sharkweek #instalike #instalove #photooftheday #picoftheday #uwphoto #reef #flashbackfriday #friday #tigershark #tigersharks
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#fbf to our research paper from 2016 that investigated seasonal and life-stage variation in tiger sharks. Advancing knowledge of the reproductive biology and mating systems of these sharks is extremely challenging due to their large size and mobility

The Bahamas
We work quickly during our brief shark work-ups. In just a few minutes we perform measurements, tagging, a fin clip, blood draw, and then finally release the shark! 
We tag every shark we encounter to ensure a specific ID number for that shark matches to all the data collected. 
Measurements help us determine the overall fitness of the shark as well as estimate age. 
Fin clips are a small tissue sample that are used for genetic testing- are these sharks related to other sharks in Biscayne Bay? 
The blood draw provides a wealth of information including hormone analysis and stress responses. All of this data is important to collect over time so we can build baseline information for these species, identify abnormalities, and answer critical questions. .
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{: @ali_banas} .
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#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 #underwaterphotography
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We work quickly during our brief shark work-ups. In just a few minutes we perform measurements, tagging, a fin clip, blood draw, and then finally release the shark! We tag every shark we encounter to ensure a specific ID number for that shark matche

Miami, Florida
We use specialized fishing equipment to ensure that our sharks can continue swimming until our team reaches them. In this video, you can see a sandbar shark on one of our lines, swimming so oxygenated water flows over her gills. True to its name, this shark prefers the sandy bottoms of coastal areas, and is known for seasonal migrations like many other requiem sharks. Because it has a high fin-to-body weight ratio, the sandbar sharks have been targeted by commercial and sports fishers, but it has a long growth and reproduction cycle so it is earning selected protected status in many areas.
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{: @juliasaltzmanphotography} .
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#shark #sharks #fish #fishing #miami #florida #science #sharkresearch #research #ocean #saltlife #water #conservation #nature #wildlife #nofilter #ig #sharkweek #instalike #instalove #photooftheday #picoftheday #uwphoto #reef #video #underwaterphotography
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We use specialized fishing equipment to ensure that our sharks can continue swimming until our team reaches them. In this video, you can see a sandbar shark on one of our lines, swimming so oxygenated water flows over her gills. True to its name, thi

Miami, Florida