How many hearts does an octopus have?
An octopus has three hearts: two pump blood through the gills and one pumps it to the rest of the body.
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- Do sea otters have blubber?
“Unlike most marine mammals, sea otters have no blubber.”
Reference: Monterey Bay Aquarium
More from this shelf
Which animal has the densest fur?
Sea otters have the densest fur of any animal, up to about a million hairs per square inch.
What is an "otter tail"?
The Labrador Retriever has a thick, rounded, tapering "otter tail" that works like a rudder, helping the dog steer while it swims.