The feeding method of the Norse hafgufa monster is similar to the feeding method recorded in a video of a whale in 2011.
Oysters, mussels and clams have a mechanism that makes the color of their eyes camouflage to match the color of the water they're in.
A study found man-made noise could increase the risk of mother whales being separated from their calves since their normal vocalizations are quiet.
Sea butterflies are not known to sting or harm humans.
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