The first set of Post & Go stamps on 2013's Freshwater Life theme will be issued on February 22, featuring Pond Life.

The six designs show the three-spined stickleback, the smooth newt, the emperor dragonfly, the lesser silver water beetle, the fairy shrimp and the glutinous snail. The first three are fairly common in Britain, but the latter three are endangered.

This is the first Post & Go set illustrated by lino-cut artist Chris Wormell, following the retirement of Robert Gillmor.