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The numbered steps it takes for the initial source of energy starting from the bottom to reach the top of the food web is called the food chain length. [33] While food chain lengths can fluctuate, aquatic ecosystems start with primary producers that are consumed by primary consumers which are consumed by secondary consumers, and those in turn ...
Virginia opossum feigning death, or "playing possum" Opossums are usually solitary and nomadic, staying in one area as long as food and water are easily available. Some families will group together in ready-made burrows or even under houses.
The family Balaenidae, the right whales, contains two genera and four species. All right whales have no ventral grooves; a distinctive head shape with a strongly arched, narrow rostrum, bowed lower jaw; lower lips that enfold the sides and front of the rostrum; and long, narrow, elastic baleen plates (up to nine times longer than wide) with fine baleen fringes.
In addition to their vision or echolocation, Christian de Muizon argues that they may have possessed tactile hair, which are also found in walrus and to a lesser extent in Amazon river dolphins. Odobenocetops is among the cetaceans with the greatest range of head motion, exceeding even the values of the beluga whale. This may have helped while ...
Heavy metals such as mercury accumulate up the food chain. Cetaceans, generally at the top of the food chain, are the principal animals affected. [72] The mercury is a by-product of gold washing in the Amazon basin. [72] Mercury and selenium have been detected in several cetacean species hunted off Saint Vincent for food. [147]
A whale has been spotted in the Elizabeth River. WTKR reports: The Virginia Aquarium Stranding Response Team has been monitoring the live whale daily since last Thursday, August 14. The 40 foot ...
A researcher fires a biopsy dart at an orca.The dart will remove a small piece of the whale's skin and bounce harmlessly off the animal. Cetology (from Greek κῆτος, kētos, "whale"; and -λογία, -logia) or whalelore (also known as whaleology) is the branch of marine mammal science that studies the approximately eighty species of whales, dolphins, and porpoises in the scientific ...
Also known as the takuache, and the cuh, the Edgar can make those who embrace it look like fools or misfits. Moe Howard , the leader of the Three Stooges, wore one. So did Lloyd Christmas ...