Project Description

Nurse Shark

Ginglymostoma cirratum

Aquarium Location

Great Hall

Habitat

Adult and large juvenile nurse sharks usually rest in warm waters, from the intertidal zone to rocky and coral reefs, about 70 meters deep. Generally, they stay in deeper waters during the day and come closer into shore at night when they are more active.

Range

The nurse shark is commonly found in the coastal waters of the Atlantic and the eastern Pacific Ocean. They range from Senegal to Gabon in the eastern Atlantic and Rhode Island to southern Brazil on the western side. In the Pacific, the nurse sharks’ span is much smaller; they are only found from Mexico to Peru.

Diet

The nurse shark primarily eats bottom-dwelling animals such as stingrays, shrimp, squid, octopus, crabs, snails, urchins and lobsters. Although they have a fairly small mouth, they have strong suction and have even been known to suck a large conch out if its shell.

Fun Facts

Nurse sharks are nocturnal and can be found resting on the sea floor during the day, sometimes in piles of up to 40 other nurse sharks.
Does not have to keep swimming to breath, as some other sharks do, because they are able to pump water over their gills- This saves energy and is important for bottom dwelling animals.
Are considered relatively harmless, but will bite if harassed or provoked.
Two possible origins for nurse sharks’ name: 1) They make a suckling sound like a nursing baby when they eat, or 2) the term “nurse” may come from “nusse,” the nurse sharks’ original common name.
Some have home ranges, which they stay in during the day. They will also return there at night after swimming great distances.

Cool Adaptation

Nurse sharks have thin, fleshy, whisker-like organs on the lower jaw just below the nostrils that sense touch and taste. This helps the nurse shark sense potential prey on the ocean floor.

Conservation Connection

Nurse sharks have become popular as bait and sport fish with anglers and crab fisherman. In the Caribbean, fishermen will often catch and kill nurse sharks because they are considered a pest. The sharks are very abundant and they raid fish traps intended for other species. In the U.S., when nurse sharks are mistakenly caught, they are usually kept alive and released back into the ocean. Nurse sharks have become a popular species for both research and display in public aquaria because of their status as a shark, ease of care, dark color and docile behavior. They have also become a popular species in the pet trade, although they develop and grow rapidly, and often outgrow a hobbyist’s or private aquarist’s tank.

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