Pete Oxford / Marsupial Frog (Gastrotheca riobambae) tadpole, native to South America

Pete Oxford / Anthony's Poison Arrow Frog (Epipedobates anthonyi) male carrying tadpoles, native to South America

MYN / Paul van Hoof / Common spadefoot toad (Pelobates fuscus) composite showing metamorphosis from larva to adult, The Netherlands, meetyourneighbours.net project

Chris Mattison / Spotted reed frog (Hyperolius pucticulatus) tadpoles, captive, endemic to Tanzania.

Barrie Britton / Wasp (Ropalidia species) which attacks tadpoles. Association Mitsinjo Reserve, Andasibe, Madagascar. Photograph taken on location for BBC 'Wild Madagascar' Series, February 2010

Barrie Britton / Wasp (Ropalidia species) attacking Mantellid Frog Tadpoles (Guibemantis species) on leaf overhanging pond. Tadpoles escape by dropping into water. Association Mitsinjo Reserve, Andasibe, Madagascar....

Barrie Britton / Mantellid Frog Tadpoles (Guibemantis species) developing on leaf overhanging pond. Association Mitsinjo Reserve, Andasibe, Madagascar. Photograph taken on location for BBC 'Wild Madagascar' Series,...

Piotr Naskrecki / Three-striped Poison Dart Frog (Ameerega trivittata) male carrying tadpoles, Suriname

Piotr Naskrecki / Three-striped Poison Dart Frog (Ameerega trivittata) male carrying tadpoles, Suriname

Alex Mustard / 2020VISION / Light-bulb sea squirts (Clavelina lepadiformis), a colonial filter feeding invertebrate, fluoresce green when photographed under deep blue light. Shetland Islands, Scotland, UK, June. Did you know? Se...

Wild Wonders of Europe / Ziegler / Dice snake (Natrix tesselata) hunting for small fish and tadpoles in a lake, Patras area, The Peloponnese, Greece, May 2009

Wild Wonders of Europe / Ziegler / Dice snake (Natrix tesselata) swimming while hunting for little fish and tadpoles in a lake, Patras area, The Peloponnese, Greece, May 2009