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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- Why are manta rays hunted?
“Manta rays are threatened by hunting for their gill plates.”
Reference: Manta Trust
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Which fish has the largest brain for its body size?
Manta rays have one of the largest brain-to-body ratios of any fish.
Do any two tigers have the same stripes?
No two tigers have the same stripe pattern, so researchers can identify individual wild tigers from camera trap photos almost like fingerprints.