Glass sponges are found along the deep sea, providing a hiding place for small critters along the seafloor. For one newly discovered species, glass sponges provide both a home and a hunting ground.

Deep beneath the ice-encrusted Arctic seas near the North Pole, atop an inactive deep-sea volcano, a community of sea sponges has survived for centuries by eating the fossils of ancient extinct worms.

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 ...