An ideal habitat

An ideal habitat for the Blue Sea Slug would be in a warm ocean with little to no currents, free from sea birds, humans, or carnivorous fish. An abundance of Man of War jellyfish would provide an ideal food source. A few other Sea Slugs here and there would provide a secure and reliable way to keep the population from dropping.

However, since this is nearly impossible to achieve these conditions exactly, the Sea Slugs would have a varying amount of difficulty to survive in their environment.