Mussels, shrimp and squat lobsters at Zooarium hydrothermal vent at Magic Mountain hydrothermal field, located on the Southern Explorer Ridge in the North Pacific Ocean, about 150 miles west of Vancouver. This vent is a lower-temperature sulphide chimney, a structure that forms when super-heated seawater, richly charged with metals and volcanic gases, rises into the cold deep ocean from hot regions below the seafloor. The heat and minerals provide an energy source that supports an ecology of organisms adapted to the extreme conditions.