Sea Fauna Shell Star Ocean Souvenir Sheet of 9 Stamps Mint NH Marilyn Monroe Most life forms evolved initially

Most life forms evolved initially in marine habitats

Mozambique Charles Darwin Anniversary Dianosaur Mini Sov

100 satellites from more than 40 countries have been launched

a good example of convergent evolution

insects comprise a class within the Arthropoda

Sea Fauna Shell Star Ocean Souvenir Sheet of 9 Stamps Mint NH Marilyn Monroe Most life forms evolved initiallyRwanda Sea Fauna Shell Star Ocean Souvenir Sheet of 9 Stamps Mint NH An ocean (from Ancient Greek , transc. Okeans) is a body of water that composes much of a planet's hydrosphere. On Earth, an ocean is one of the major conventional divisions of the World Ocean. These are, in descending order by area, the Pacific, Atlantic, Indian, Southern (Antarctic), and Arctic Oceans. The word "ocean" is often used interchangeably with "sea" in American English.