Daily Shark Fact - 5/5/2025
Today's shark is the bonnethead shark!
The basics: a small member of the hammerhead shark family, bonnethead sharks (Sphyrna tiburo) are nearshore species found in a limited range of the North Atlantic and Gulf of Mexico. They're the only hammerheads that have sexual dimorphism in the shape of the "hammer" - females have a rounded head, and males have a bulge along the front of the "hammer" shape. Because they are so small, they struggle to use their "hammer" to aid in lift while swimming the way other hammerheads do, and have well-developed pectoral fins in comparison to other hammerheads because they put them to so much work.
Conservation status: Endangered. The bonnethead shark is still reasonably common in its range, but heavy overfishing has contributed to a severe population decline in some regions.
Today's fun fact: bonnethead sharks are the only omnivorous sharks! They eat a large amount of seagrass, perhaps to help protect their stomachs from the sharp, spiny shells of crustaceans they eat, and can digest it with decent efficiency.
