Otodus megalodon was probably a top predator that fed on whales. This is evidenced by tooth marks in the fins and vertebrae of large whales. There are also healed bite marks in a baleen whale vertebra, caused by a rather younger O. megalodon specimen tooth width of just under 6 cm, calculated length of 4 to 7 m, calculated tooth height of 7 to 8 cm. However, it is not possible to determine whether the tooth impression came from an O. megalodon, a great white shark, a Parotodus or another animal for example a toothed whale. However, due to the suspected jaw shape, a shark is most likely to be the cause. It is believed that O. megalodon preferred to hunt large whales; juveniles are seen as hunters of smaller whales. This is indicated by the fact that larger baleen whales were missing in the young animals` preferred hunting grounds. Very young specimens probably ate fish or maybe even dugongs manatees.
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