Depending on the species, the average life expectancy of a whale can vary between 30 and 90 years.
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20
What is echolocation?
Some marine mammals, such as dolphins and orcas, use echolocation to send sound waves into their surroundings and listen to their reflections to obtain informat
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15
What are pinnipeds?
Pinnipeds are a group of marine mammals that includes sea lions, seals, and walruses.
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How do whales sleep?
They sleep by turning off half of their brain, which allows them to continue swimming and breathing.
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15
Define marine mammals.
Marine mammals are a group of mammals that have adapted to life in the oceans and seas.
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20
What kind of marine mammal has only 10 individuals living in the wild as of 2023?
Vaquita
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15
What do cetaceans include?
Dolphins and whales
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What do sea otters feed on?
Sea otters feed mainly on crustaceans, bivalves, and fish.
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15
What is the purpose of a whaleโs blowhole?
The whale uses its blowhole to breathe air when it swims to the surface.
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15
How are sea lions different from seals?
Sea lions have visible outer earlobes, and their hind limbs are mobile.