Octopuses are an extremely diverse group of sea life. With roughly 300 species in total, there are many octopus species that are unfamiliar to most people. One example is the argonaut, a type of ...

The California two-spot octopus is a solitary creature. How exactly they manage to find suitable mates has been one of the ocean’s best-kept secrets. Now scientists have discovered that male octopuses ...

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Mature male octopuses have a specialized 'hectocotylus' for transferring spermatophores containing sperm. Research by Keijiro Haruki and colleagues at Nagasaki University has revealed that a small ...

The specialized arm that male octopuses use for mating is also a sensory organ that can detect the ovarian hormone progesterone, according to new experiments conducted by Pablo Villar and colleagues.

The ocean offers a strong essence of beauty and mystery. With such diverse ecosystems, animals have evolved different adaptations to survive. The octopus, or he’e in Hawaiian, is one of those ...

Argonaut octopuses are rarely seen by humans, as they live in the open ocean away from shores. Females have a thin shell that carries their eggs, giving them the nickname ‘paper nautilus.’ Males have ...