Around 400 million years ago, Earth’s oceans were dominated by massive sea scorpions. Scorpions, as we know them today, are ...

Witness a dramatic prehistoric battle between a giant sea scorpion and a modern killer whale. Donald Trump authorizes U.S.

Still, next to nothing is known about most local scorpion species. During the Paleozoic Era, giant sea scorpions would have been the equivalent of a great white shark in their food web.

Previous reef-builders such as bryozoans were joined by corals and prehistoric sponges known ... food chain were the fearsome eurypterids, or sea scorpions. Some species grew to more than six ...