When the bottom-dwelling worms of Denmark’s fjords rise up in summer to spawn, they are predated by the resident jellyfish.

Most polychaete species spend their lives in burrows in the seabed. However, adult individuals of two species, Alitta ...

A newly observed feeding behavior suggests jellyfish may exploit short-lived seasonal events in surprising ways.

Jellyfish are opportunistic predators but it seems they've added these typically seafloor dwelling worms to the menu.

Watch one of the strangest creatures in the ocean — a jellyfish that can effectively reverse its own life cycle. Instead of dying after reaching adulthood, this animal can transform itself back into ...

On a calm summer's morning in southern Australia, the water can look deceptively clear, until you see thousands of gelatinous ...

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