Search results
Results from the WOW.Com Content Network
Many pelagic fish species, such as bluefish, Atlantic mackerel, tuna, bonito, and some sharks, swim continuously and do not show signs, behavioural or otherwise, of sleep. [29] [4] It has been argued that one function of sleep is to allow the brain to consolidate into memory the things it has learned during the animal's normal period of ...
Fish locomotion. Fish locomotion is the various types of animal locomotion used by fish, principally by swimming. This is achieved in different groups of fish by a variety of mechanisms of propulsion, most often by wave-like lateral flexions of the fish's body and tail in the water, and in various specialised fish by motions of the fins.
Shoaling and schooling. These powder blue tangs are shoaling. They are swimming somewhat independently, but in such a way that they stay connected, forming a social group. These bluestripe snapper are schooling. They are all swimming in the same direction in a coordinated way. In biology, any group of fish that stay together for social reasons ...
Whale sharks' lifespans are estimated to be between 80 and 130 years, based on studies of their vertebral growth bands and the growth rates of free-swimming sharks. [ 9 ] [ 10 ] [ 11 ] Whale sharks have very large mouths and are filter feeders, which is a feeding mode that occurs in only two other sharks, the megamouth shark and the basking shark .
Shark barrier. A shark barrier (otherwise known as a "shark-proof enclosure" or "beach enclosure") is seabed-to-surface protective barrier that is placed around a beach to protect people from shark attacks. Often confused with shark nets, shark barriers form a fully enclosed swimming area that prevents sharks from entering (nets aim to reduce ...
Diet and nutrition. Sharks are very frequently overfed by amateur aquarists, which can lead to obesity or unnaturally fast growth rates. [7] Captive sharks are healthiest when fed at levels similar to their food intake in the wild. [7] Usually this amounts to 1-3% of their body weight weekly. [7] However, aquarium conditions and species ...
Shark cage diving is underwater diving or snorkeling where the observer remains inside a protective cage designed to prevent sharks from making contact with the divers. Shark cage diving is used for scientific observation, underwater cinematography, and as a tourist activity. Sharks may be attracted to the vicinity of the cage by the use of ...
When National Geographic approached Anthony Mackie with an opportunity to swim with sharks to kick off its SharkFest programming, it was an easy yes for the Marvel star who is the new Captain America.