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A great cormorant swimming. Aquatic locomotion or swimming is biologically propelled motion through a liquid medium. The simplest propulsive systems are composed of cilia and flagella. Swimming has evolved a number of times in a range of organisms including arthropods, fish, molluscs, amphibians, reptiles, birds, and mammals.
Geologic Time – Period prior to humans. 4.6 billion to 3 million years ago. (See "prehistoric periods" for more detail into this.) Primatomorphid Era – Period prior to the existence of Primatomorpha; Simian Era – Period prior to the existence of Simiiformes; Hominoid Era – Period prior to the existence of Hominoidea
A common bottlenose dolphin (Tursiops truncatus). A dolphin is an aquatic mammal in the clade Odontoceti (toothed whale).Dolphins belong to the families Delphinidae (the oceanic dolphins), Platanistidae (the Indian river dolphins), Iniidae (the New World river dolphins), Pontoporiidae (the brackish dolphins), and possibly extinct Lipotidae (baiji or Chinese river dolphin).
This allowed the team to measure the force exerted by a dolphin. Results showed the dolphin to exert approximately 200 lb of force every time it thrust its tail – 10 times more than Gray hypothesized – and at peak force can exert between 300 and 400 lb. [2]
Marine biologists have captured a rare sight of a giant pod of over 1,500 dolphins leaping and swimming off the California coast. The “super pod” of Risso’s dolphins was spotted in Carmel ...
Did you know October and November are the best months for dolphin watching in the Grand Strand? This is what you should know if you’re hoping to see one.
This template returns the cumulative number of days, hours, and minutes in space for a person currently in space. ... {time in space|03:53 04 March 2024 ...
Miami Dolphins wide receiver Jaylen Waddle (17) catches a pass over New York Jets cornerback D.J. Reed (4) for a touchdown during the first half of an NFL game at Hard Rock Stadium in Miami ...