Light diminishes with the ocean’s depth and the part where light is still visible is referred to as the photic zone. The pelagic zone of the oceans includes all open water while the seafloor is known as the benthic zone. As such, the ocean and its substrate (the seafloor) can be categorized further into zones with distinguishing features. You have to consider that the ocean is deep (you might recall the Emden Deep dive in the news before) and that parts of the ocean near the shore will obviously differ with the larger, open expanse of it. Photo Credit: NASA Image and Video Library.Īlthough the ocean is vast, marine ecosystems within it differ like night and day. In the foreground is Andros Island and in the background are the Tongue of the Ocean, the Exuma Islands, Exuma Sound, and the Atlantic Ocean. The light blue shallow water platforms of the Bahamas, (24.0N, 77.0W) which are separated by very deep dark blue channels make for a striking scene. The Ocean: Water that Encircles the Planet Let’s begin with the marine biome and start with the largest itself: the ocean.
You can classify the major aquatic biomes as belonging to either marine or freshwater biomes. Intertidal Zone: Where Sea Meets Land and Becomes Less Salty We will begin our exploration with the aquatic biomes. Terrestrial biomes are primarily influenced by temperature and precipitation while aquatic biomes are defined by different abiotic factors with the main distinction being salinity. Biomes are major ecological associations that occupy a broad geographic region of land or water.
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