Doug Perrine / Female Bull sharks (Carcharhinus leucas) in seasonal breeding aggregation with Sharksuckers (Echeneis naucrates) Playa del Carmen, Cancun, Quintana Roo, Yucatan Peninsula, Mexico (Caribbean Sea)

Jeff Rotman / Great White shark (Carcharodon carcharias) surfacing with head and dorsal fin visible, Dyer Island, South Africa, Atlantic Ocean.

Mike Parry / Great White Shark (Carcharodon carcharias) breaking surface of water to feed, Neptune Islands, South Australia

Mike Parry / Great White Shark (Carcharodon carcharias) breaking surface of water to feed, Neptune Islands, South Australia

Mike Parry / Great White Shark (Carcharodon carcharias) breaking surface of water to feed, Neptune Islands, South Australia

Mike Parry / Great White Shark (Carcharodon carcharias) at surface, South Australia

Mike Parry / Great White Shark (Carcharodon carcharias) swimming underwater, Neptune Islands, Australia. Digitally enhanced

Mike Parry / Great White Shark (Carcharodon carcharias), Neptune Islands, Australia

Mike Parry / Great White Shark (Carcharodon carcharias) swimming underwater, Neptune Islands, South Australia

Mike Parry / Great White Shark (Carcharodon carcharias) swimming underwater, Neptune Islands, South Australia

Mike Parry / Great White Shark (Carcharodon carcharias) side view of face, Neptune Islands South Australia

Mike Parry / Great White Shark (Carcharodon carcharias) swimming through a school of fish, Neptune Islands, South Australia