A group of seals is known as a pod. Seals are semi-aquatic marine mammals that live in the ocean and on land. They are found in all oceans, but mainly inhabit cold waters. Seals have a streamlined body shape and flippers for swimming. They feed on fish, crustaceans, and mollusks. Seals use their whiskers to detect prey in murky water. They are social animals and live in large groups called pods. Pods can range from a few individuals to hundreds of seals.