Blue-ringed octopus are solitary animals, found on sandy or rubble areas. There are at least 2 different species of Blue-Ringed octopus found in Lembeh strait. Different species can be visually distinguished from one another by the diameter and frequency of blue rings and the body size. Blue rings only appear when the animal is agitated. The rings can change thickness and pulsate. They have a highly toxic bite. First aid for a blue ring bite is continuous mouth to mouth resuscitation. This species can be recognized by its tiny blue rings scattered over the body. It lives in temperate inshore water from intertidal areas. It can usually be found at rocky reef, rubble areas, or sea grass beds. They like to hide in shells, bottles, or even cans that make them feel safe. This octopus has a small body size - about 5 cm, but has a very dangerous toxin that can cause death. This is a very rare species.