Michele Westmorland / Snorkeler swimming with harmless Jellyfish (Mastigias papua etpisonii), Jellyfish Lake, Rock Islands, Palau, Micronesia.

Hiroya Minakuchi / Papuan Jellyfish (Mastigias papua), Palau

Chris Newbert / Papuan Jellyfish (Mastigias papua) 20 feet deep, Solomon Islands

Juergen Freund / Papua jellyfish {Mastigias papua}, Indo-Pacific

Chris Newbert / Papuan Jellyfish (Mastigias papua) 20 feet deep, Solomon Islands

Michael Pitts / Papua jelly fish with fish near tentacles, Palau, Pacific Ocean

Michele Westmorland / Snorkeler swimming with harmless Jellyfish (Mastigias papua etpisonii), Jellyfish Lake, Rock Islands, Palau, Micronesia model released

Nature Production / Papuan Jellyfish (Mastigias papua) Japan

Hiroya Minakuchi / Papuan Jellyfish (Mastigias papua), native to southern Pacific Ocean

Hiroya Minakuchi / Papuan Jellyfish (Mastigias papua), Palau

Hiroya Minakuchi / Papuan Jellyfish (Mastigias papua), Palau

Hiroya Minakuchi / Papuan Jellyfish (Mastigias papua), Palau

Hiroya Minakuchi / Papuan Jellyfish (Mastigias papua), Palau

Hiroya Minakuchi / Papuan Jellyfish (Mastigias papua) pair near the surface, Palau

Juergen Freund / Snorkeler with a Papuan Jellyfish (Mastigias papua) and salps, Camarines Sur, Luzon, Philippines 2008

Juergen Freund / Papuan Jellyfish (Mastigias papua) Camarines Sur, Luzon, Philippines 2008

Juergen Freund / Papuan Jellyfish (Mastigias papua) Camarines Sur, Luzon, Philippines 2008

Hiroya Minakuchi / Papuan Jellyfish (Mastigias papua), Japan

Michael Pitts / Mastigias papua jellyfish {Mastigias papua} Palau, Western Pacific Islands

Michael Pitts / Mastigias papua jellyfish {Mastigias papua} Palau, Western Pacific Islands

Doug Perrine / Papuan jellyfish {Mastigias papua} Bikini atoll, Marshall Is, Micronesia

Sue Daly / Papua jellyfish {Mastigias papua} Patch Reef, Borneo, Indonesia

Chris Newbert / Papuan Jellyfish (Mastigias papua) 20 feet deep, Solomon Islands

Chris Newbert / Papuan Jellyfish (Mastigias papua) 20 feet deep, Solomon Islands

Norbert Wu / Papuan Jellyfish (Mastigias papua) this species stings, relative to non-stinging species in lakes, Palau

Norbert Wu / Papuan Jellyfish (Mastigias papua) has a powerful sting as opposed to their stingless cousins in landlocked Jellyfish Lake, Palau

Norbert Wu / Papuan Jellyfish (Mastigias papua) often lies upside-down on lagoon floor, South Pacific

Norbert Wu / Papuan Jellyfish (Mastigias papua) in rare landlocked lake, Kakaban Island, Borneo

Juergen Freund / Papua jellyfish {Mastigas papua} Indo-Pacific

Juergen Freund / Papua jellyfish {Mastigias papua} Sulu-sulawesi seas, Indo-Pacific ocean

Roberto Rinaldi / Papua jellyfish (Mastigias papua) in Ongeim'l Tketau / Jellyfish lake, a marine lake in Palau, Micronesia.

Roberto Rinaldi / Spotted / Papua jellyfish (Mastigias papua), Borneo.

Roberto Rinaldi / Snorkeller with Papua jellyfish (Mastigias papua) in Ongeim'l Tketau / Jellyfish lake, a marine lake in Palau, Micronesia. Model released.

Nature Production / Papuan Jellyfish {Mastigias papua} Miura Peninsula, Kanagawa, Japan, august