The crew also found cactus-like sea urchins and marine sponges that were as tall as humans. Scientists from Ocean Census, one of the organizations that planned the expedition, said that these ...
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 ...
The sponges live on top of extinct volcanoes on the sea floor Scientists say they've solved the mystery of how giant sponges flourish in the deep, icy waters of the Arctic. The sea sponges survive ...