Search results
Results from the WOW.Com Content Network
Potamogalidae is the family of "otter shrews", a group of semiaquatic riverine afrotherian mammals indigenous to sub-Saharan Africa. [2] They are most closely related to the tenrecs of Madagascar, from which they are thought to have split about 47–53 million years ago. [2] [3] [4] They were formerly considered a subfamily of Tenrecidae. [2]
These changes relate to the feeding and habits of the animals, not completely evolutionary modifications. Dolichorostral ("long snouted") phytosaurs have a long, slender snout with many conical teeth that are homodont (all the same). These taxa were most likely piscivores that were well adapted to capture fast aquatic prey, but not terrestrial ...
Thalassocnus were nearshore herbivores which likely became aquatic due to the desertification of the land and a lack of terrestrial food. [10] Earlier species were likely general grazers that foraged for seagrass and seaweed along the sandy coastline, indicated by scratch marks on the teeth caused by chewing sand, probably foraging in areas ...
In biology, being semi-aquatic refers to various macro organisms that live regularly in both aquatic and terrestrial environments. When referring to animals , the term describes those that actively spend part of their daily time in water (in which case they can also be called amphibious ), or land animals that have spent at least one life ...
Like other aquatic mammals, they do not represent a biological grouping. [26] The humpback whale is a fully aquatic marine mammal. Marine mammal adaptation to an aquatic lifestyle vary considerably between species. Both cetaceans and sirenians are fully aquatic and therefore are obligate ocean dwellers.
They are ubiquitous in marine, freshwater and terrestrial environments, where they often outnumber other animals in both individual and species counts. They are found in every part of the Earth's lithosphere, from the top of mountains to the bottom of oceanic trenches. [51] By count they represent 90% of all animals on the ocean floor. [52]
And the densities or rigidities of the oceanic organisms are relative low compared with that of the terrestrial species. The water environment allows the organism to be soft, watery and huge. To be watery and transparent is a successful way to avoid predation. [1] Sea water can prevent desiccation although it is much saltier than fresh water.
Green algae are also known to have extremely thin cell walls due to their aquatic surroundings, and research has shown that green algae is the closest ancestor to living terrestrial and aquatic plants. [34] Terrestrial plants have rigid cell walls meant for withstanding harsh weather, as well as keeping the plant upright as the plant resists ...