Tiny, Darting Things

The weather spiked again this past weekend, reaching 27° with not a cloud in sight. Unless you happened to be in the Shetland Isles, which sits up there in the top of the map looking like Al Capp's Joe Btfsplk.
Beetroot seedlings are now about an inch high and potato growth has just become apparent. Below, another sample from the bog/fen/swamp (hey swampy) ...

There amongst the tadpoles are a crustacean/amphipod, a couple of nematodes(?) perhaps, and about a thousand other tiny, darting things.