Thorny devil lizard
Thorny devil lizard (Moloch horridus) on sand. The brown colouration of this desert-dwelling lizard helps to camouflage it in scrub and red sand. It feeds exclusively on black ants, which it licks up with its tongue. It is well adapted to its desert habitat, having a system of grooves on its skin which lead to the corners of its mouth. It can therefore drink moisture that falls on its back. An agamid lizard, it may reach a length of over 20 centimetres. It inhabits the deserts of Australia. Photographed near Shark Bay, Western Australia.
© GEORGETTE DOUWMA/SCIENCE PHOTO LIBRARY
Fish scales, light micrograph
Fish scales. Polarised light micrograph of part of the skin of a fish, showing the placoid protective scales. These scales are found under the epidermis, and are made of bone-like dentine. The scales overlap one another, and the ones shown here have radiating bony spines at their outer edges, a characteristic of the fish the scales are from. The fish used here is a flat fish, the European sole (Solea solea).
© DR KEITH WHEELER/SCIENCE PHOTO LIBRARY
East European hedgehog
East European hedgehog (Erinaceus concolor).Hedgehogs are omnivores and are known to eat a wide range of invertebrates including earthworms, slugs and snails. They will also eat frogs, small reptiles, young birds and mice, carrion, bird eggs, acorns and berries. They are mainly nocturnal animals. Photographed in Israel.
© PHOTOSTOCK-ISRAEL/SCIENCE PHOTO LIBRARY