It’s that time of year to feed your shark feeding frenzy appetite. Shark week is just around the corner and for some researchers, studying and tracking sharks happens year-round, not just one week out of the year.
Shark tagging allows researchers the chance to study the movements of these ocean predators and why they like to frequent certain waters over others. The sharks can have a tag placed near the shark’s dorsal fin, or they can have an acoustic telemeter inserted into the abdomen of the shark.
Acoustic telemeters are little pingers that ping every 60 to 90 seconds. For researchers to get information on where the shark is, it has to go by an acoustic receiver.
Chris Fisher is known for his work with OCEARCH. Since 2007 Fisher has tagged many great whites, who have become local favorites, especially here in South Carolina. Fischer sets up a Twitter handle for all his sharks so they can “communicate with people.” You can access all the shark’s Twitter handles through Fischer’s Twitter account.
According to the global shark tracker, Mary Lee has traveled almost 40,000 miles since she was tagged, many of her travels have taken her off the coast of South Carolina. Through her tag, researchers were able to tell if she was pregnant just by her movements and where she would spend time during certain times of the year.
The tagging process must run efficiently. According to OCEARCH, it should only take 15 minutes to get the shark onboard, tagged and back into the water.
This research is not only happening in the deep depths of the Atlantic Ocean. There are also tagging efforts happening right off the coast of South Carolina. Marine Biologists with Coastal Carolina University focus on the smaller resident sharks that call Winyah Bay home.
Dr. Dan Abel, a marine biologist with CCU, started the research program more than 15 years ago. He takes a group of undergraduate and graduate marine biology students out to Winyah Bay to study Juvenile Sandbar Sharks.
Caroline Collatos, a graduate student in the marine biology department at Coastal Carolina University, tells us the process to catch a shark is precise. According to Collatos, students bait 25 hooks on a line that is 150 meters long. The line has floats and anchors at both ends. Once the lines are in the water, they soak for 30-45 minutes. The students then hand pull the line in, hoping they have a shark on one of the hooks.
Recently the Coastal Carolina Shark research team caught a small spinner shark that was just weeks or months old. The team was able to conclude this by an umbilical scar still visible on the shark.
This catch helped marine biologists determine that Winyah Bay is, in fact, a secondary nursery, meaning it is a place where baby sharks grow up.