Seals are very timid creatures, but like all wild animals , will nip if they feel threatened, so it is wise to approach them gently, calmly and carefully. Other Seal species, including the Grey and Common Seals , live all over the world from the frozen wastes of the polar regions, to the tropical beaches in Hawaii and almost everywhere in between. Seals are a semi-aquatic species, also commonly referred to as pinnipeds. There are three general categories of seals , classified as Phocidae, consisting of the true seals , Otariidae, consisting of fur seals and sea lions, and Odobenidae, which currently includes only walruses. Learn about seal , a carnivorous mammal that can live on land and in water. Find out the different types of seals, their characteristics, behavior, diet, and conservation status. Explore the remarkable diversity of seal species, ranging from Weddell seals to Gray seals , and uncover the adaptations that enable them to thrive in the most challenging environments.