Killer sponges discovered on the Pacific coast

Scientists have discovered four new species of carnivorous sponge off the Pacific Coast, including one deadly variety found hanging from the deep-sea ridges off southern Vancouver Island. Carnivorous sponges were only discovered in 1995. Since then, only 137 species have been described, including these four. Just 11 of them were found in the North Pacific; some of the last to be discovered were in Madang Lagoon, Papua New Guinea.