Mysterious giant sharks that outlived the dinosaurs lurking in Puget Sound
Source ↗
👁 0
💬 0
Most sharks have five gill slits on either side. But Hexanchus griseus, a giant and mysterious shark species, has an even six gill slits. These fish, appropriately called the sixgill shark, live in both tropical and temperate waters around the world and can reach up to 14-feet-long. They’ve existed since before the dinosaurs, and yet marine biologists still don’t know very much about them.
One of the problems—for researchers, anyway—is that sixgills usually live in deep oceanic waters, at de
One of the problems—for researchers, anyway—is that sixgills usually live in deep oceanic waters, at de
Comments (0)