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Photograph by Emory Kristof
Alvin, an underwater vessel, travels across the floor of the Caribbean Sea. Alvin began working in 1964 and was the first deep-sea vessel that could carry passengers. -
Photograph by Brian J. Skerry
A school of fish swims past Aquarius, an underwater research lab in the Florida Keys. -
Photograph by Luis Marden
Two divers off the coast of France peer into Denise, a diving vessel built for two passengers. Researchers use vessels like this to explore the deep sea.
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Photograph by Wolcott Henry
A diver swims through an underwater forest of giant kelp in Monterey Bay, California. This giant seaweed is found along the Pacific coast of North America. -
Photograph by Bill Curtsinger
A diver watches a young sea otter play in Monterey Bay, California. Sea otters like to float in underwater forests of kelp, a type of giant seaweed. -
Photograph by Maria Stenzel
A scientist in an ice-covered observation tube watches an emperor penguin dive in McMurdo Sound, Antarctica. The scientist was studying the diving behavior of these penguins. -
Photograph by Paul Nicklen, National Geographic
A diver swims over a bed of large, round table coral. This photo was taken near Kanton Island, part of the Phoenix Islands in Kiribati, a country in the Pacific Ocean. This area is famous for its beautiful coral.
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