where is red algae found in the ocean
Red algae Unicellular members of the Cyanidiophyceae are thermoacidophiles and are found in sulphuric hot springs and other acidic environments.[12] The remaining taxa are found in marine and freshwater environments. Most rhodophytes are marine with a worldwide distribution, and are often found at greater depths compared to other seaweeds because of dominance in certain pigments (i.e., Phycoerythrin) within their chloroplasts.[13] Some marine species are found on sandy shores, while most others can be found attached to rocky substrata.[13] Freshwater species account for 5% of red algal diversity, but they also have a worldwide distribution in various habitats;[5] they generally prefer clean, high-flow streams with clear waters and rocky bottoms, but with some exceptions.[14] A few freshwater species are found in black waters with sandy bottoms [15] and even fewer are found in more lentic waters.[16] Both marine and freshwater taxa are represented by free-living macroalgal forms and smaller endo/epiphytic/zoic forms, meaning they live in or on other algae, plants, and animals [6] In addition, some marine species have adopted a parasitic lifestyle and may be found on closely or more distantly related red algal hosts [17][18]
Diatom Diatoms are a widespread group and can be found in the oceans, in fresh water, in soils, and on damp surfaces. They are one of the dominant components of phytoplankton in nutrient-rich coastal waters and during oceanic spring blooms, since they can divide more rapidly than other groups of phytoplankton.[66] Most live pelagically in open water, although some live as surface films at the water-sediment interface (benthic), or even under damp atmospheric conditions. They are especially important in oceans, where they contribute an estimated 45% of the total oceanic primary production of organic material.[67] Spatial distribution of marine phytoplankton species is restricted both horizontally and vertically.[68][20]
Pacific Ocean The Pacific Ocean is the largest and deepest of Earth's oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south and is bounded by Asia and Australia in the west and the Americas in the east.
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