Last updated: February 27, 2018 at 18:04 pm
Lion’s mane jellyfish (Cyanea capillata) — The largest individuals have a bell diameter of 2.3 m (7.5 ft) with over 800 tentacles; some reaching lengths of 37 m (120 ft). Despite its large size, the lifespan of the lion’s mane jellyfish is only one year. It inhabits the cold waters of the Arctic, North Atlantic and North Pacific Oceans where much smaller specimens are often encountered by divers. Its sting is painful and can cause severe burns. Divers wearing full-body dive suits are well protected but may nonetheless be stung in the face, especially on the lips, when a jellyfish drifts overhead or from leftover and near-invisible tentacles caught on ascent and mooring lines.