Newt sp. elt: this is a very small one - about 5mm long.
Here's one a bit older - the gills are obvious, and in contradistinction to frog tadpoles, the forelimbs develop first. The hindlimb buds are seen as bulges further down the body.
Combining the dark-field illumination with a little fill light from above brings out more detail.
Crustacean sp. I've no idea what these tiny shrimps are called. The larger one is about 7mm long. I'll have to buy a book!
Water Beetle (possibly Family Dytiscidae). Solid subjects give a rim effect.
But with a little fill light from above, become more life-like, but it shows the dirt more. I like to think of this as the "Starship Coleoptera".
All the images were taken with a Canon EOS 7D, 50mm F2.5 macro lens with 25mm extension tube linked to an old Sunpack ring flash that's been cluttering up my cupboard for years. Even if you get accused of hoarding, never throw anything away!
None of the animals were harmed by this activity, and went straight back in the pond.