Assertion: manta ray's predator | /r/CapableOf | eat dolphin
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text: For example, the Carcharodon megalodon, which first appeared about 16 million years ago, grew to 55 feet long and weighed as much 25 tons, before going extinct about 2.5 million years ago, making it the largest predator that ever lived, eating dolphins, whales, and other megalodons.