Each year, the discovery of new shark species underlines how little we know about ocean biodiversity. In a recent report conducted by Sibert and Rubin, they reported an unexpected finding: a large-scale extinction of sharks in the pelagic ocean, the largest ecosystem on Earth, about 19 million...
What species is a whale shark? How many teeth do monkeys have? How many basking sharks are in the world? How many incisors does a tarsier have? How many whales are there around Antarctica? How much do whale sharks eat a day? How much does a baby whale shark weigh?
If we do not know them all -- if Nature has still secrets in the deeps for us, nothing is more conformable to reason than to admit the existence of fishes, or cetaceans of other kinds, or even of new species ..." The unknown invites us to populate it with creatures of our own ...
题目 A new rule has been passed that will protect more than 50 of the world's shark species,many of which are endangered.The rule was signed by the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES),which manages how people deal in...
Ovoviviparous Sharks: Many shark species, including the great white shark and the tiger shark, are ovoviviparous. In these species, the female retains the eggs within her body, where they are fertilized and develop into embryos. Embryo Development: The embryos receive nourishment from a yolk sa...
In the world's great whale tales, including Herman Melville's "Moby Dick," the storytellers are preoccupied with one particular whale attribute: awesome size. Many whale species are staggeringly enormous. The blue whale, for example, can grow to 100 feet (30 m) long, about the height of ...
There are cases in which sharks seem to attack out of aggression, rather than hunger. Very little is known about shark behavior, but it is believed that some species, including great whites, display dominance behavior over other sharks. This behavior can take the form of "punching" with ...
But that image has come under inspection in recent years, as shark researchers around the world have discovered the fish gathering in large numbers and interacting with others of their own species in ways that are obviously friendly. Yannis Papastamatiou, a marine scientist at Florida ...
Sharks are a vital part of the ocean's ecosystem and sadly,overfishinghas left many species of shark in danger ofextinction. The International Union for Conservation of Nature (IUCN) lists three kinds of thresher sharks as vulnerable worldwide. The mako shark has been moved from near threatened...
Research has shown that themost common shark species involved in attacks is theGreat White shark,renowned for its size and power. However, other species such as theTiger shark, theBull shark, andthe Mako shark, have also been known to attack humans. These predators are all capable of causing...