Walrus

Walruses are found primarily in the shallow waters of the Arctic Ocean and the northern seas off North America and Eurasia. They are divided into two subspecies: the Atlantic Walrus (Odobenus rosmarus rosmarus) and the Pacific Walrus (Odobenus rosmarus divergens), with the latter being slightly larger. These animals are social, often found in large herds on sea ice or rocky coastlines, where they rest between feeding sessions.

The diet of the Walrus consists mainly of benthic bivalve mollusks, which they detect with their sensitive whiskers and excavate from the ocean floor using jets of water and their powerful flippers. They may also consume other invertebrates, such as sea cucumbers and gastropods, and occasionally fish.

Reproduction in Walruses involves aquatic courtship that starts in late winter, with males vocalizing and displaying their tusks to attract females. Females give birth to a single calf after a 15 to 16-month gestation period, which includes a delayed implantation of the embryo. Calves are born during the spring migration, on the ice floes in the northern birthing grounds, and are nursed for over a year while remaining closely attached to their mothers.

The population of the Walrus has been affected by historical overhunting, but conservation efforts and international regulations have helped stabilize some populations. However, they face new threats from climate change, particularly the loss of sea ice habitat, which is crucial for their resting, breeding, and feeding behaviors. Conservation initiatives focus on habitat protection, climate change mitigation, and monitoring the impact of industrial activities in the Arctic.