With blue blood and three hearts, the octopus has one of the most unusual circulatory systems in the animal kingdom.
The animal was spotted more than 5,500 feet underwater by a research expedition. The Ocean Exploration Trust's Nautilus mission ran into the octopus while live-streaming. Rare footage shows an unusual ...
Rare footage shows a "Dumbo" octopus swimming near a submersible in the deep ocean. The animal was spotted more than 5,500 feet underwater by a research expedition. The Ocean Exploration Trust's ...
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