The killer whale or orca (Orcinus orca) is a toothed whale belonging to the oceanic dolphin family, of which it is the largest member. Killer whales are found in all oceans, from Arctic and Antarctic regions to tropical seas.
Break a sponge in half, and two grow. More than a colony, less vulnerable than a tissue-based creature. Human societies could learn a lesson from the lowly sponge. Tube Sponge (Aplysina fistularis).