Sea Tigers are huge aquatic mammals similar to sea lions and walruses, distinguished by their striped, leathery hide and dorsal fin. They have four muscular legs ending in webbed claws and a mouth filled with long, sharp fangs. Measuring about 20 feet in length and weighing up to 3 tons, these creatures are intelligent, akin to dogs and wolves, and can be trained similarly.

Sea Tigers hunt a variety of prey, including fish, birds, and animals that venture too close to the shore. They are often seen on rocky shorelines, basking in large family groups. The largest and strongest member, regardless of gender, leads a pod, which includes both females and young ones.

In combat, Sea Tigers use their blindsight to navigate and locate prey, and they can hold their breath for extended periods. Their preferred attack method is to circle and rush at their targets individually until the opponent flees or is defeated .