2013-05-06 67 creatures in puddles

2013-05-06 67 creatures in puddles

Observation - 2013-05-06 67 creatures in puddles - UK and Ireland. Description: This is a puddle in a field where it hadn't rained for over a week and the rest of the area had dried significantly (with strong winds) since I'd visited a week before. Nearby is an identified spring point (bubbles coming out of the soil - nothing drama

This is a "puddle" in a field where it hadn't rained for over a week and the rest of the area had dried significantly (with strong winds) since I'd visited a week before. Nearby is an identified spring point (bubbles coming out of the soil - nothing dramatic). In the puddle are some pinhead sized orange creatures and I would love to know what they are (plus the beetle) and anything about the habitat generally and what may be going on here. I've included a landscape shot to show the puddle in context - the grassed horizontal line is the top bank of a small chalk stream towards which the land slopes gently. This area of the otherwise ploughed field obviously gets wetter than the rest (hence churned up by the tractor wheels whereas the rest is ploughed) despite not being particularly low-lying and different vegetation grows here. This is my first post on i-spot - can anyone help, please?