Multiple choice general knowledge science & technology

Which the only mammal that lives in sea?

  1. Crocodile

  2. Fish

  3. Shark

  4. Whale
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Whales are mammals that live in the ocean, breathing air and nursing their young with milk. The question incorrectly states 'only mammal' since dolphins, porpoises, seals, sea lions, walruses, and manatees are also marine mammals. Despite this, whale is still the correct answer among the options.

AI explanation

Among the options given, the whale is the only mammal — it's warm-blooded, breathes air through lungs, and nurses its young with milk, all mammalian traits, despite living fully in the ocean. Fish, sharks, and crocodiles are not mammals: sharks and fish breathe through gills and are cold-blooded, and crocodiles are reptiles.

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