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Blue Whales and Humpback Whales, (and a few other less known species) don't have teeth because they don't "chew" anything. They are "filter feeders". Whales, the largest creatures on earth, subsist on a diet of one of the smallest creatures in the ocean, Krill.

Krill, are small shrimp-like invertebrates, are found in all oceans of the world. They gather in "Swarms" that can have a biomass of several thousand tons. Whales feed on these swarms by opening their huge mouths, swimming into the swarm, scooping up huge mouth-fulls of Krill and water. Then the the water is pushed out through the baleen, (an upper jaw bone that has filter combs) and the the Krill remain as food source for the whale

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13y ago

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