Life Reef sharks are being wiped out by overfishing so rays are taking over A global survey reveals that common species of coral reef shark are in sharp decline, and rays are more abundant in reefs where sharks have been depleted NewsFree
Life Megalodon vs great white: New clues to demise of world’s largest shark An analysis of zinc isotopes in ancient shark teeth suggests megalodon and great whites ate the same foods, potentially contributing to megalodon’s mysterious extinction NewsFree