Narwhal

Overview

The narwhal is a medium-sized toothed whale native to the frigid waters of the Arctic Ocean. Easily recognized by its iconic spiraled tusk, this marine mammal spends much of its life navigating dense pack ice and deep offshore zones. Alongside the beluga whale, it is one of the only two living members of the Monodontidae family.

Appearance

Stocky and robust in build, the narwhal features a blunt snout, a rounded melon on its head, and a shallow dorsal ridge instead of a true fin. The most famous physical feature is the prominent tusk found in males, which is actually an elongated, protruding upper left canine tooth growing in a helical spiral. Their skin coloration typically features a mottled pattern of grey, black, and white markings that lightens with age.

Biology & behavior

This specialized Arctic cetacean is well adapted to extreme environments, possessing specialized slow-twitch muscles and flexible neck vertebrae to aid mobility under ice sheets. They rely heavily on sophisticated echolocation to navigate pitch-black waters and locate obstacles or prey. These animals are also highly vocal, producing diverse clicks, whistles, and pulsed calls to communicate.

Feeding

During the winter months, narwhals dive deep beneath heavy pack ice to hunt for benthic and pelagic organisms. Their diet consists primarily of flatfish, squid, shrimp, and various cod species, secured during prolonged dives that can reach impressive depths.