Rannikkohyöriä

Rannikkohyöriä, scientifically known as Halichoerus grypus, is a species of seal found along the northern Atlantic coasts. It is one of two seal species commonly found in the Baltic Sea, the other being the Baltic ringed seal. Rannikkohyöriä are distinguished by their large size and the distinctive, horse-like shape of their heads, which gives them their scientific name meaning "hook-nosed sea pig." Adult males can reach lengths of up to 2.5 meters and weigh over 300 kilograms, while females are typically smaller. Their coloration varies, ranging from dark grey to brown, often with lighter spots or rings.

These seals primarily inhabit coastal areas, including rocky shores, islands, and sandbanks. They are adept swimmers and divers, feeding on a variety of fish, crustaceans, and cephalopods. Rannikkohyöriä are also known for their breeding behavior, with large colonies forming on land during the pupping season. Pups are born with a white, woolly coat and are dependent on their mothers for milk for several weeks.

The population of rannikkohyöriä in the Baltic Sea experienced a significant decline in the late 20th century due to factors such as pollution, overhunting, and habitat loss. However, conservation efforts have led to a notable recovery in recent decades, and the species is now considered less endangered. Despite this recovery, they continue to face threats from entanglement in fishing gear, noise pollution from shipping, and potential impacts of climate change on their prey availability and breeding grounds.