Fishing spider. Artwork sequence (left to right) illustrating how a fishing spider (Dolomedes sp.) rows over water. Seen from above,the middle leg pairs move,one by one,from a forward position to a backward position. The legs are then lifted and moved forward (not seen) for the next stroke. The spider slides forwards over the slippery surface on its front and back legs,which prevent it from sinking. All this is possible because the spider is light enough for surface tension to stop it from sinking. This tension results from attractive forces between the surface water molecules. Speeds of up to 30 centimetres per second allow the spider to catch insects,tadpoles and small fish | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Bensusen, Sally |
Bildgröße: | 1200 px × 300 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |