Defining the Two Groups The primary way scientists categorize cetaceans is by their physical structure, specifically the presence or absence of a dorsal fin and the shape of the rostrum. Generally, if you see an animal with a pronounced beak and a tall, curved dorsal fin, you are likely looking at a dolphin.
Exploring Intelligence and Play Behavior in Dolphins Versus Whales
They take in massive gulps of water and then push it out through baleen plates, trapping krill and small fish like a sieve. Understanding this distinction is key to appreciating the diversity of ocean life.
They undertake some of the longest migrations in the animal kingdom, traveling thousands of miles between polar feeding grounds and tropical breeding sites. Most whale species are pelagic, meaning they roam the open ocean.
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Whales, particularly historical populations, were decimated by commercial whaling, though many species are recovering due to international protection. In contrast, many whales—specifically baleen whales—filter feed.
More About Difference between dolphins and whales
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