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The narwhal was scientifically described by Carl Linnaeus in his 1758 publication Systema Naturae. [5] The word "narwhal" comes from the Old Norse nárhval, meaning 'corpse-whale', which possibly refers to the animal's grey, mottled skin and its habit of remaining motionless when at the water's surface, a behaviour known as "logging" that usually happens in the summer.
Plants sometimes provide housing and food items for natural enemies of herbivores, known as "biotic" defense mechanisms, to maintain their presence. For example, trees from the genus Macaranga have adapted their thin stem walls to create ideal housing for ants (genus Crematogaster), which, in turn, protects the plant from herbivores. [76]
These encounters can kill or weaken the insect. Insects protect themselves against these detrimental microorganisms in two ways. Firstly, the body-enveloping chitin cuticle, in conjunction with the tracheal system and the gut lining, serve as major physical barriers to entry.
Articles relating to the Monodontidae, a cetacean family which comprises two living whale species, the narwhal and the beluga whale, and at least four extinct species, known from the fossil record. Beluga and Narwhal are native to coastal regions and pack ice around the Arctic Ocean .
A chameleon launching its tongue at its prey. Chameleons, frogs and some lungless salamanders have tongues that act like a tethered projectile. In frogs, the tongue is attached at the front of the mouth and rotates about this attachment as it flips out (thus the top of the tongue at rest becomes the bottom when extended).
Mobbing is usually done to protect the young in social colonies. For example, red colobus monkeys exhibit mobbing when threatened by chimpanzees, a common predator. The male red colobus monkeys group together and place themselves between predators and the group's females and juveniles. The males jump together and actively bite the chimpanzees. [52]
Here are five actions you can take to protect yourself as a consumer, all of which should take less than five minutes to complete. 1. Turn on Two-Step Verification on Your Email
Narwhals is a looped animated music video, much like Weebl's earlier work "Scampi", and is animated by Wonchop. This music video is about the narwhal , and, throughout the song, a list of "facts" are presented as to why narwhals are awesome.