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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- How tall is an orca's dorsal fin?
“A male orca's dorsal fin can be up to six feet tall.”
Reference: NOAA Fisheries
More from this shelf
What is the largest dolphin?
The orca, also called the killer whale, is actually the largest member of the dolphin family, not a true whale in the everyday sense.
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.