Astonishingly, the ocean teems with brainless creatures that thrive using instinct and nerve networks. Jellyfish, sea sponges, starfish, sea cucumbers, and coral demonstrate survival without a ...

Jellyfish, sea sponges, starfish, sea cucumbers, and coral demonstrate survival without a central brain. Jellyfish use nerve nets to hunt, while sponges filter nutrients.

Feather sea star: Pictured here is a feather star, perched on top of a Red sea fan coral. These feathered stars are closely related to the starfish family, including sea urchins and sea cucumbers.

Sea Sponge. Photo by Meruyert Gonullu, via Pexels. Sponges represent one of the most primitive forms of multicellular life on Earth, existing without hearts, brains, organs, or even true tissues.

A research team led by Occidental College has identified a previously unknown symbiosis; deep sea spiders that cultivate and ...

Scientists on the US West Coast say they discovered three previously unknown species of deep-sea spider that could have a ...

The research offers new insights on interactions between creatures on the mysterious seafloor and sheds light on the methane ...

The mesh-like fossil would push back the oldest known animal on Earth by more than 300 million years. But like many claims of very old life, the study is kicking up lively debate.

While the Sericosura spiders are the first of their kind caught feeding on methane-fueled microbes, they’re not alone in ...

Sponges are some of the oldest animals on Earth, ... Sea urchins, like starfish, ... How To Make Your Relationship Work. 03:19.

The common sea sponge Crella incrustansVictoria University of Wellington / Stuff Marine sponge communities - among the most abundant species on the seafloor with a key role in ocean health ...