→Long sea creature — with 'large ... The species also has another feature seen in glass frogs — green bones. In addition, researchers found clutches of eggs belonging to C.

Zoantharians are marine invertebrates related to other better-known cnidarians such as jellyfish, sea anemones and corals.

Glass sponges are some of the longest-living sea creatures that build intricate, cylindrical structures using needle-like “spicules” as bricks. Some sponges have trapped crustaceans living ...

Beneath the ocean's surface, simple marine animals called sea sponges grow delicate glass skeletons that are as intricate as they are strong. These natural structures are made of a material called ...