The moment a whale slapped its tail almost hit a diver.

The moment a whale slapped its tail almost hit a diver.

Whales are the largest animals on Earth and they live in every ocean. The massive mammals range from the 600-pound dwarf sperm whale to the colossal blue whale, which can weigh more than 200 tons and stretch up to 100 feet long—almost as long as a professional basketball court.

There are two types of whales: toothed and baleen. Toothed whales, as the name suggests, have teeth, which are used to hunt and eat squid, fish, and seals. Toothed whales include sperm whales, as well as dolphins, porpoises, and orcas, among others. The narwhal’s “horn” is actually one long tooth protruding through its lip.

Baleen whales are larger than toothed whales, for the most part. They include blue whales, humpbacks, right whales, bowhead whales, and others. They feed by straining tiny shrimp-like creatures called krill through the fringed plates of long, fingernail-like material called baleen attached to their upper jaws.

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