Narwhals

Answer #1 Narwhals [Monodon monoceros] are members of the Monodontidae or one toothed family of whales. They share that membership only with beluga whales [Delphinapterusleucas]. Fossils of modern members of that family date back 9-10 million years, in the eastern North Pacific. Answer #2 Since Day 5 of Creation.

The evolutionary purpose of a narwhal is the niche that it holds within its particular food chain. Its food chain is that of Arctic waters. Its niche within that chain is the role of predator. The predator-prey interaction, in nature and among wildlife, is intended to keep populations and their environments in balance. The narwhal niche is high up on the food chain, because it basically fears only hunters. In fact, it's prey to humans, killer whales [Orcinus orca], and polar bears [Ursus maritimus].

Yes, the narwhal uses echolocation. It communicates and navigates by an array of sounds. The sound waves travel until they bounce off obstacles. The returning sound waves then are processed by the narwhal's own head and possibly own tusk. The narwhal then knows what obstacles are in and near its path and what evasive action to engage in.

Male narwhals can reach a length of 5 meters and weigh up to 1800 kg. This meets oxygen demands for more than 20 minutes underwater at swim speeds of 1 m/s.
125 mph

Narwhals can swim at speeds of up to 6 miles per hour (9.7 km/h). They are agile swimmers that use their long tusks to break through ice in the Arctic waters where they live.

"Narwhal" is Norse for "corpse whale", because the spotted body (very unusual for a whale) reminded the Norse sailors of the body of a man who has drowned.

The horn is actually not a horn at all. Narwhals have two teeth in the upper jaw. After the first year of a male narwhal's life, its left tooth grows outward, spirally. This long, single tooth projects from its upper jaw and grows to be 7-10 feet long.

They swim down over a mile towards the bottom of the ocean to hunt fish. To help them do this, they swim upside-down most of the way, and have collapsible rib-cages to alleviate some of the intense pressure.

Daily, a narwhal may eat as much as an estimated 30 kilograms/66 pounds worth of fish. But that's only a guess, and one that represents an average of extremes. In fact, narwhal feeding habits involve yo-yo feeding and dieting between two main yearly habitats. Specifically, the narwhal migrates between, and feeds differently at, high Arctic winter feeding grounds and low Arctic summer grounds.

No, narwhals do not live in the midnight zone. Narwhals are typically found in Arctic waters, where they remain close to the surface to breathe and feed. The midnight zone, also known as the middle zone or bathypelagic zone, is much deeper in the ocean and not a habitat for narwhals.

The adult male narwhal tends to weigh in at 1,600 kilograms/3,500 pounds. Its body length tends to measure in at 4-6 meters/13-16 feet. Additionally, it typically has a tusk. The tusk tends to add another 2-3 meters/7-10 feetfrontwards.

A male narwhal tends to have one tusk, and the female none. But there are rare instances of a two-tusked male and a one-tusked female. There even is the one known, recorded instance of a two-tusked female.

No, narwhals are not typically kept in zoos due to their specialized needs and the challenges of creating a suitable environment for them in captivity. They require cold, Arctic waters and have a diet that may be difficult to replicate in a captive setting.

Narwhals are so magical, they live forever!

Adult male narwhals tend to weigh more than adult females. The male may weigh as much as 1,600 kilograms/3,500 pounds. The female may weigh as much as 1,000 kilograms/2,200 pounds.
Bulls (Male narwhals) weigh about 1 ¾ T (3,500 lb) and grow about 15-20 ft, excluding the large tusk. Cows (female narwhals) weigh about 1 1/5T (2,200lb) and grow about 13-16 ft. Calves (Young narwhals) weigh about 175-220 lbs and are about 5 ft long.

A narwhal's strongest sense is its hearing, which is crucial for communication, navigation, and locating prey in the dark Arctic waters. They also have a well-developed sense of touch, particularly in their long tusk, which may help them sense changes in water temperature and pressure.

Inuit hunt narwhals for their meat, skin, blubber, and tusks, which provide important sources of food, clothing, tools, and materials for the community. Narwhals have been a traditional part of Inuit culture and diet for centuries.

well when they squeak or whatever they do there ECHO goes in all directions, and it goes to the other narwhal. but if it were ECHOLOCATION then when the squeak or whatever would go in all directions then bounce back off the object it was looking for or whatever that was in front of them.

Yes, narwhals can lose their teeth. Females tend to have both their teeth embedded in their jaws. Males tend to have frontwards projecting, long tusks growing out of one tooth. Sometimes, they have tusks growing out of both teeth. The tusks can break off.

A narwhal is a picky eater. It particularly favors eating cod, halibut, shrimp, and squid. Scientists aren't sure how narwhals eat. But one possibility is sucking in, and swallowing whole, their prey.

Narwhals live in the upper, sunlit zone of the Arctic and North Atlantic Ocean waters. It ventures down into the middle zone and even the topmost part of the lower zone. But these are merely forays for food.

A depth of 4,500 feet/1,500 meters is the furthest down that a narwhal can live. But that depth only can be tolerated for 20-25 minutes at a time. That depth also is reached only in pursuit of narwhal prey of the lower, midnight zone of the Arctic and North Atlantic ocean waters. Typically, a narwhal favors the sunlit waters of the upper zone that goes down 600 feet/200 meters from the ocean surface.

Whale lice are the most common external parasites of the narwhal [Monodon monoceros]. They particularly favor the base of the male narwhal's tusk. Worms are the most common internal parasites. They particularly favor the stomach, and the middle ear.

Yes they do have. The Narwhal (meaning "corpse whale" in Old Norse) is a rarely seen Arctic whale. This social whale is known for the very long tooth that males have.