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Scientists have discovered at least four new species of octopus in the deep waters of a 100-square-mile area near Costa Rica, officials from the Schmidt Ocean Institute said on Tuesday.

A deep-sea octopus nursery, just the third known to exist, has been discovered off the coast of Costa Rica, according to the Schmidt Ocean Institute.

Pyrolycus jaco is the first eelpout species to be seen on the Jacó Scar methane seep, an extreme environment that exhibits hydrothermal vent-like characteristics, including elevated temperatures up to ...

A scientific expedition in June found two new deep-sea octopus nurseries on two different low-temperature hydrothermal vent sites off the west coast of Costa Rica — two of only three known deep ...