David Fleetham / Polka-Dot / Spotted batfish (Ogcocephalus radiatus) resting on seabed. Florida, USA.

David Fleetham / Polka-Dot Batfish (Ogcocephalus radiatus), Florida, USA.

Melvin Grey / Polka-dot tree frog (Hypsiboas punctatus) adult on leaf, Amazon, Ecuador. June.

Paul Bertner / Polka-dot Treefrog (Hypsiboas punctatus), Manu National Park, Peru

Paul Bertner / Polka-dot Treefrog (Hypsiboas punctatus), Manu National Park, Peru

Juergen Freund / Polka dots beetle weevil (Pachyrrhynchus congestus) Queensland, Australia.

Sean Crane / Polka-dot Treefrog (Hypsiboas punctatus), Madidi National Park, Bolivia

Sean Crane / Polka-dot Treefrog (Hypsiboas punctatus), Madidi National Park, Bolivia

Bert Willaert / Polka dot treefrog (Hypsiboas punctatus) taken against white background, Bolivia.

Pete Oxford / Polka-dot Treefrog (Hypsiboas punctatus), Napo River, Yasuni National Park, Amazon, Ecuador

Pete Oxford / Polka Dot Moth (Pantherodes pardalaria), Mindo Cloud Forest, western slope of Andes, Ecuador

Robert Thompson / Polka dot wasp moth {Syntomeida epilais} Florida, USA, September