saltwater biomes

Marine biome

Marine biomes The sea occupies 70% of the Earth’s surface. Its average depth is 4,000 meters. The salinity of the sea water is, on average, about 35 grams of salt per liter of water. The temperature of the sea water surface varies between 32 º C in the tropics and -2 º C in polar regions. The movement of water is produced by tides, caused… read more »