Megalodon sharks lived about 1.5 to 28 million years ago in the Cenozoic Era. People think that the Megalodon is still out there and many think it's still extinct. Out in the ocean it's 2% searched. They saw if Megalodons still exist they live really deep.
Sawfish... critically endangered species.....A strange-looking fish has snapped up a spot on the endangered species list. The smalltooth sawfish is the first U.S. marine fish to receive federal protection as an endangered species.