Talitrus saltator

[3] In order to do this, it must stand on its legs (amphipods usually rest on their sides) and suddenly extend its abdomen from under its body.

[4] A great deal of scientific research has been carried out on the animal, to determine the environmental cues which it uses to control its behavior.

[4] Talitrus saltator reaches lengths between 8.2 millimetres (0.32 in) and 16.5 mm (0.65 in), with males being slightly larger than females.

During the winter, adults burrow into the sand until they reach a moisture content of 2%; this may require them to dig up to 50 centimetres (20 in) deep.

[4] Talitrus saltator spends the day buried at depths of 10–30 cm (3.9–11.8 in) above the strandline, but emerges at night on the falling tide to feed.