An ancient lake is a lake that carried water uninterruptedly for more than one million years. This is in contrast to the vast majority of lakes, which are of much ...

An anchialine pool is a landlocked body with a subterranean connection to the ocean. Anchialine pools are a feature of coastal aquifers which are density stratified, with the water ...

Vernal pools, also called vernal ponds or ephemeral pools, are temporary pools of water. They are usually devoid of fish, and thus allow the safe development of natal amphibian and ...

Molokini is a crescent-shaped, partially submerged volcanic crater which forms a small islet located in Alalakeiki Channel between the islands of Maui and Kahoʻolawe, part of Maui County ...

Coordinates: 18°42′N 110°57′W / 18.7°N 110.95°W / 18.7; -110.95 Socorro Island (Spanish: Isla Socorro) is a small volcanic island in the Revillagigedo ...

A cold seep (sometimes called a cold vent) is an area of the ocean floor where hydrogen sulfide, methane and other hydrocarbon-rich fluid seepage occurs, often in the form ...

Krill is a shrimp-like marine invertebrate animal. These small crustaceans are important organisms of the zooplankton, particularly as food for baleen whales, manta rays, whale shark ...