Bizarre Deep-sea Creatures

Bizarre deep-sea creatures imaged off New Zealand

• 12:00 27 November 2006
• NewScientist.com news service
• Catherine Brahic

The weird and wonderful creatures living by methane vents in the southwest Pacific have been photographed for the first time.

The deep-sea communities live around methane seeps off New Zealand’s eastern coast, up to 1 kilometre beneath the sea surface. The team of 21 researchers from the US and New Zealand, who spent two weeks exploring the area, have just returned to shore. See video footage recorded by the researchers here, here and here.

“It's the first time cold seeps have been viewed and sampled in the southwest Pacific, and will greatly contribute to our knowledge of these intriguing ecosystems,” says Amy Baco-Taylor from the Woods Hole Oceanographic Institution in the US.

Cold seeps are areas of the seabed where methane or hydrogen sulphide gas escape from stores deep underneath. Like hydrothermal vents, the gases support unique life forms that can convert the energy-rich chemicals into living matter in the absence of any sunlight.

Sheer extent

Animals living around methane seeps off Chile and Japan have been observed before, but not near New Zealand. “The seeps here are remarkable in the sheer extent of their chemosynthetic communities,” says Baco-Taylor, whose team visited eight such sites between 750 and 1050 metres beneath the surface.