For some ocean creatures, creating light is a matter of life and death. Learn about how light is used in the ocean.

Marine life, which is also known as sea life or ocean life, refers to all the marine organisms that live in salt water habitats, or ecological communities that encompass all aquatic animals, plants, algae, …

Sep 16, 2025 · Learn about the ocean and its inhabitants, from sea turtles to whales. The ocean is essential to life on Earth. It covers more than 70% of our planet and holds 96.5% of all water. It …

May 26, 2021 · Our ocean, coasts, and estuaries are home to diverse living things. These organisms take many forms, from the tiniest single-celled plankton to the largest animal on Earth, the blue whale.

Jan 27, 2026 · Across Earth's history, the ocean has nurtured nearly every form of life that has ever existed. Immerse yourself in the diverse ecosystems around coral reefs, the surprising homes of …

Explore the Marine Life Encyclopedia to learn fun facts and more about your favorite marine animals. From sharks and sea turtles to ecosystems and corals, you’re in the right place to take a deep dive …

Most of the environments at sea are cold and at just about any depth below the surface the pressure is very high. Beyond the photic zone, the ocean is entirely black. Organisms have adapted to these …