What is an AUV?

The autonomous underwater vehicle Sentry is designed to dive as deep as 6,000 meters (19,685 feet). It is powered by more than 1,000 lithium-ion batteries - similar to those used in laptop computers, though adapted...

Why are so many deep-sea animals red in color?

The deep-sea scyphozoan jellyfish, Atolla wyvillei, as seen under white light. Image courtesy of Edith A. Widder, Operation Deep Scope 2005 Exploration, NOAA-OE. Did You Know? Some jellyfish have clear bodies yet their stomachs are...

What is an ROV?

NOAA's Deep Discoverer remotely operated vehicle explores during a 2013 expedition to investigate the U.S. Atlantic canyons. Image courtesy of the NOAA Okeanos Explorer Program. Did You Know? In 2013, NOAA’s Office of Ocean...

What features form at plate tectonic boundaries?

Superheated molten lava, about 2,200 degrees Fahrenheit, is about to explode into the water at the West Mata volcano along the Pacific Ring of Fire. The area in view is about 6-10 feet...

How do living organisms produce light?

This short-nose greeneye fish exhibited green fluorescence under blue light. Image courtesy of Edie Widder, Operation Deep Scope 2004. <!-- Did You Know? Investigating cold-water coral communities now allows us to learn about them...

What are marine microbes?

Marine bacteria growing on an agar plate. Image courtesy of Lophelia II 2012 Expedition, NOAA-OER/BOEM. Did You Know? Initiated on the summer solstice in 2012, Ocean Sampling Day (OSD) organizes scientists from all over...

How deep is the ocean?

In areas of the ocean where sunlight does not penetrate, organisms such as these Riftia tubeworms seen along the Galapagos Rift have adapted to produce food through a process called chemosynthesis, which uses energy...

What is upwelling?

During upwelling, wind-displaced surface waters are replaced by cold, nutrient-rich water that wells up from below. Figure modified by D. Reed from image by J. Wallace and S. Vogel, El Niño and Climate...

Why are seamounts ‘hot spots’ for biodiversity?

One spectacular hard rock area had a very high coral diversity during a on Retriever Seamount. This one image has bamboo corals, black corals, and octocorals, all living together to form a community....