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Rather than ingesting sea water in order to change their internal salinity, sharks are able to absorb sea water directly. This is due to the high concentration of urea kept inside their bodies. This high concentration of urea creates a diffusion gradient which permits the shark to absorb water in order to equalize the concentration difference ...
For the deep-sea ecosystem, the death of a whale is the most important event. A dead whale can bring hundreds of tons of organic matter to the bottom. Whale fall community progresses through three stages: [32] Mobile scavenger stage: Big and mobile deep-sea animals arrive at the site almost immediately after whales fall on the bottom.
Marine life, sea life or ocean life is the collective ecological communities that encompass all aquatic animals, plants, algae, fungi, protists, single-celled microorganisms and associated viruses living in the saline water of marine habitats, either the sea water of marginal seas and oceans, or the brackish water of coastal wetlands, lagoons ...
In passive electrolocation, the animal senses the weak bioelectric fields generated by other animals and uses it to locate them. These electric fields are generated by all animals due to the activity of their nerves and muscles. A second source of electric fields in fish is the ion pump associated with osmoregulation at the gill membrane. This ...
At each chronon, each shark is deprived of a unit of energy. Upon reaching zero energy, a shark dies. If a shark moves to a square occupied by a fish, it eats the fish and earns a certain amount of energy. Once a shark has survived a certain number of chronons it may reproduce in exactly the same way as the fish.
Anchor's fans quickly swarmed Adventure Aquarium's page to share their stories and photos of their own. As of Wednesday, there were 207 comments on the aquarium's Facebook post.
More than 84,000 marine animals have been ensnared by drum-lines and shark nets since the program began in 1962 [...] Nearly 27,000 marine mammals have been snared. The state’s shark control policy has captured over 5,000 turtles, 1,014 dolphins, nearly 700 dugongs and 120 whales, all of which are federally protected marine species. [46]
Another possibility is that predators can benefit from diel vertical migration as an energy conservation strategy. Studies indicate that male dogfish (Scyliorhinus canicula) follow a "hunt warm - rest cool" strategy that enables them to lower their daily energy costs. They remain in warm water only long enough to obtain food, and then return to ...