Vents & Volcanoes

Hot water, minerals, methane and other chemicals can be found seeping up from the seafloor where specialized communities of microbes and animals thrive. Underwater volcanoes also spew a huge amount of magma and drive movement of the seafloor.

Intense volcanic CO2 vents in Ili Ili Bua Bua, Normanby Island, Papua New Guinea.

Will Coral Reefs Survive Acidification?

Nestled among the beautiful coral reefs of Papua New Guinea (PNG) is a place that could provide the key to our understanding of one of the biggest threats to coral reef survival: Ocean Acidification...
Carrie Bow Cay field station sits in the blue and turquoise waters of Belize.

Tracking volcanic rock to the shores of Belize

Mangrove Mystery – Where Did All the Pumice Come From? For years, scientists have found pumice, a porous volcanic rock, scattered on the beaches and mangroves of Belize, despite the lack of volcanoes in...
A squat lobster and blackbelly rosefish find shelter on a Lophelia pertusa coral reef off the southeastern United States.

Deep-sea Corals

It may be the last place you’d expect to find corals—up to 6,000 m (20,000 ft) below the ocean’s surface, where the water is icy cold and the light dim or absent. Yet believe...
Riftia tubeworm (Riftia pachyptila) colonies near hot spring.

The Microbes That Keep Hydrothermal Vents Pumping

These tubeworm colonies grow where hot, mineral-laden water flows out of the seafloor in undersea hot springs. Credit: ©2003 MBARI By Lyndsy Gazda & the Ocean Portal Team Life is typically sparse on the...
Havre Volcano

The Mystery of an Underwater Volcano

Credit: Courtesy of University of Tasmania by Danielle Hall Three thousand feet (900 meters) beneath the sea surface, in the middle of the Pacific Ocean, lies one of the world’s largest volcanoes, called Havre...