Red light does not reach ocean depths, so deep-sea animals that are red actually appear black and thus are less visible to predators and prey. Sunlight contains all of the colors of our visible ...

The Pacific Ocean is the largest and deepest ocean basin on Earth, covering more than 155 million square kilometers (60 million square miles) and averaging a depth of 4,000 meters (13,000 feet).

If you’ve enjoyed any classic books or movies that involve sailing on the open ocean, you might have some preconceived notions of what a voyage lasting many weeks would feel like. Maybe you picture ...

During Dive 07 of the 2026 American Samoa ROV + Mapping Exploration expedition, we observed this large Caulophacus sp. sponge that measured approximately 2 meters (6.5 feet) high and 50 centimeters (1 ...

While the Okeanos Explorer is at sea, live video is streamed to shore. This section contains information on how to view the video streaming from the ship and instructions to set up two-way ...

During Dive 06 of the 2026 American Samoa ROV + Mapping Exploration expedition, the team collected a small piece of a very tall bamboo coral, likely in the genus Bathygorgia. The coral was observed at ...

One way that the world’s ocean affects weather and climate is by playing an important role in keeping our planet warm. The majority of radiation from the Sun is absorbed by the ocean, particularly in ...

Multibeam sonar is a type of active sonar system used to map the seafloor and detect objects in the water column or along the seafloor. The multiple physical sensors of the sonar – called a transducer ...

Autonomous underwater vehicles, or AUVs, are independent underwater robots used to explore our ocean. Unlike remotely operated vehicles (ROVs), AUVs are untethered from a ship, allowing the robots to ...

An acoustic Doppler current profiler, or ADCP, is a device that uses sound waves to measure the speed and direction of currents throughout the water column. Understanding how water in the ocean moves ...

A geographic information system, or GIS, is a computer-based conceptualized framework used for organizing and analyzing data related to positions on Earth’s surface. By organizing data spatially along ...

Oxygen minimum zones are persistent layers in the water column that have low oxygen concentration due to biological, chemical, and physical processes. As oceans warm, oxygen minimum zones increase in ...