Piotr Naskrecki / Beetle predating on snail who responds with defensive bubbles, Atewa Range, Ghana

Tony Wu / Ama diver searching for shellfish including Sea snails (Turbo sazae) amongst seaweed. Hose supplies diver with air and enables communication with husband at surface. Futo Harbour, Izu Peninsula, Honsh...

Tony Wu / Ama diver searching for shellfish including Sea snails (Turbo sazae) amongst seaweed. Hose supplies diver with air and enables communication with husband at surface. Futo Harbour, Izu Peninsula, Honsh...

Tony Wu / Ama diver searching for shellfish including Sea snails (Turbo sazae) amongst seaweed. Hose supplies diver with air and enables communication with husband at surface. Futo Harbour, Izu Peninsula, Honsh...

Tony Wu / Ama diver searching for amongst seaweed with basket almost full with Sea snails (Turbo sazae). The basket can be exchanged by her husband at the surface. Futo Harbour, Izu Peninsula, Honshu, Japan. Ju...

Franco Banfi / Headshield slugs (Micromelo undatus) Raja Ampat, Irian Jaya, West Papua, Indonesia, Pacific Ocean

Juergen Freund / Bubble snail (Hydatina physis) on white background, Batanagas, Philippines.

Juergen Freund / Bubble snail (Hydatina physis) Batangas, Philippines.

GEORGETTE DOUWMA / Violet / Bubble raft snail hangs from sea surface {Janthina janthina} South Africa

GEORGETTE DOUWMA / Violet / bubble raft snail hangs upsidedown from sea surface suspended by raft of mucous coated bubbles secreted by foot {Janthina janthina} Cape, South Africa.

GEORGETTE DOUWMA / Violet snail / Bubble raft shell {Janthina janthina} feeding on pelagic jellyfish, Portugese man of war {Physllia utriculus} South Africa

David Fleetham / Two Cymbal bubble snails (Haminoea cymbalum) side by side on a reef, Fiji, Pacific Ocean

Tony Wu / Rose petal bubble shell (Hydatina physis) is gathering and arranging freshly secreted eggs on its mantle, prior to attaching the completed egg mass to the sand with a mucous thread, Kanagawa, Japan.

Tony Wu / Rose petal bubble shell (Hydatina physis) gathering and arranging freshly secreted eggs on its mantle, prior to attaching the completed egg mass to the sand with a mucous thread, Kanagawa, Japan.

David Fleetham / Three cymbal bubble snails (Haminoea cymbalum) gathered together in a ball on a reef, Fiji.

Magnus Lundgren / Wild Wonders of China / Royal paper bubble (Aplustrum amplustre) with eggmass in the side, Green Island, Taiwan.