Marine life
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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, a
Killer whales (orcas) are highly visible marine apex predators that hunt many large species. However, most marine activity takes place among microscopic organisms that cannot be seen individually with the naked eye, such as marine bacteria and phytoplankton.
Composition of seawater. Quantities in relation to 1 kg or 1 litre of sea water.
The Earth's water cycle
Microbial mats are the earliest form of life on Earth for which there is good fossil evidence. The image shows a cyanobacterial-algal mat.
Ocean
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The ocean is the body of salt water that covers approximately 70.8% of Earth. The ocean is conventionally divided into large bodies of water, which are also referred to as oceans, and are themselves m
Pacific Ocean, largest part of Earth and its ocean, seen from space in 2023
Lighthouse at the coast of Ocean County, New Jersey, U.S., facing the Atlantic Ocean at sunrise
High tide and low tide in the Bay of Fundy, Canada