Georgette Douwma / Upside down jellyfish (Cassiopeia andromeda) Lembeh, Sulawesi, Indonesia.

Claudio Contreras / Upsidedown Jelly (Cassiopea frondosa), Jardines de la Reina / Gardens of the Queen National Park, Caribbean Sea, Ciego de Avila, Cuba, January

Constantinos Petrinos / Jellyfish carry crab (Ethusa sp.) carrying Upside-down Jellyfish (Cassiopeia andromeda). Lembeh Strait, North Sulawesi, Indonesia.

Pete Oxford / Mangrove upsidedown jelly (Cassiopea xamachana) Lighthouse Reef Atoll, Belize.

Georgette Douwma / Upside down jellyfish (Cassiopeia andromeda) on sea bed with algae. Lembeh, Sulawesi, Indonesia.

Pete Oxford / Upside-down Jellyfish (Cassiopea xamachana), Lighthouse Reef, Belize

Pascal Kobeh / Upside-down jellyfish (Cassiopea andromeda), Maldives, Indian Ocean.

Hiroya Minakuchi / Upside-down Jellyfish (Cassiopea sp), Japan

Alex Mustard / Jellyfish carry crab (Ethusa sp) carrying an upside down jellyfish (Cassiopeia andromeda) at night. Komodo Island, Komodo National Park, Indonesia. Flores Sea.

Christian Ziegler / Upside-down Jellyfish (Cassiopea xamachana) floating between the aerial roots of Red Mangrove (Rhizophora mangle), Twin Cays, Carrie Bow Cay, Belize

Pete Oxford / Upside-down Jellyfish (Cassiopea xamachana), Bonaire, Netherlands Antilles, Caribbean

Pete Oxford / Upside-down Jellyfish (Cassiopea sp), Jardines de la Reina National Park, Cuba