Ocean terrors are large aquatic animals that can be found in the ocean. Orcas, also known as killer whales, are one of the most well-known ocean terrors. They are the largest member of the dolphin family and are easily recognizable by their black and white markings. Orcas are highly intelligent and social creatures, and they have been known to hunt in packs. They are apex predators, meaning they have no natural predators in the ocean.