Long portrayed in pop culture as scary beasts, real sharks ... However, blue sharks can make daily drops as far as 1,900 feet (600 m) from the surface, likely to hunt deep-sea prey.

Blue shark, Prionace glauca, is a pelagic species found off both coasts of North America. (Photo by: ... [+] Mark Conlin/VW PICS/UIG via Getty Image) On February 17, 2023, fishers off Grama Bay in ...