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Marine mammals comprise over 130 living and recently extinct species in three taxonomic orders. The Society for Marine Mammalogy, an international scientific society, maintains a list of valid species and subspecies, most recently updated in October 2015. [1] This list follows the Society's taxonomy regarding and subspecies.
Total species range is highly variable for marine mammal species. On average most marine mammals have ranges which are equivalent or smaller than one-fifth of the Indian Ocean . [ 33 ] The variation observed in range size is a result of the different ecological requirements of each species and their ability to cope with a broad range of ...
Most marine viruses are bacteriophages, which are harmless to plants and animals, but are essential to the regulation of saltwater and freshwater ecosystems. [ 90 ] : 5 They infect and destroy bacteria in aquatic microbial communities, and are the most important mechanism of recycling carbon in the marine environment.
Point Reyes National Seashore is home to almost 40 different species of land mammals, and the area also provides haul-out and breeding sites for multiple species of seals and sea lions. [5] Oregon's seashore also provides a habitat for many animals, such as the high-speed peregrine falcon , the dungeness crab , or social California sea lion .
From shallow waters to the deep sea, the open ocean to rivers and lakes, numerous terrestrial and marine species depend on the surface ecosystem and the organisms found there. [ 28 ] The ocean's surface acts like a skin between the atmosphere above and the water below, and harbours an ecosystem unique to this environment.
Mesmerizing, kaleidoscopic, and fabulously exotic, the huge variety of types of saltwater fish to pick for your aquarium will give you a visual taste of the underwater ocean world. 32 types of ...
A marine coastal ecosystem is a marine ecosystem which occurs where the land meets the ocean. Worldwide there is about 620,000 kilometres (390,000 mi) of coastline. Coastal habitats extend to the margins of the continental shelves, occupying about 7 percent of the ocean surface area.
Following is a list of marine reptiles, reptiles which are adapted to life in marine or brackish environments. This list is incomplete ; you can help by adding missing items . ( August 2008 )