Sea sponges are one such creature, and they come in many shapes and sizes. As surprising as it seems, one particular variety of sea sponge, called a glass sponge, shares something in common with ...

You can pick up a synthetic sponge for just a few dollars. But a natural sea sponge, hand-harvested from the Mediterranean seafloor, could set you back $30. Harvesting these sponges is dangerous ...

Your browser does not support the video element. Sea sponges, among the oldest creatures in existence, let out what looks like a deep sea "sneeze" to filter out waste ...