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Frog tadpole breathing air at pond surface

Frog tadpole breathing air at pond surface

Z700/0259

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Credit

CLAUDE NURIDSANY & MARIE PERENNOU / SCIENCE PHOTO LIBRARY CLAUDE NURIDSANY & MARIE PERENNOU / SCIENCE PHOTO LIBRARY

Caption

Maturing tadpole of the European edible frog, Rana esculenta, breathing air at the surface of a pond, using its newly-developed lungs. Eggs are laid in early summer and hatch after about a week. After hatching the young tadpoles remain attached to the gelatinous egg envelopes while further development occurs; a membrane grows over the external gills, the eyes become functional, the mouth & anus break through and the tail elongates. The larvae finally develop into free-swimming tadpoles, which feed mainly on algae. Gradually the legs & lungs develop & the gills & tail degenerate until the tadpoles leave the water as fully-formed frogs.

Release details

Model release not required. Property release not required.

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