Other Invertebrates

I found this worm in the pond one day when our water quality had been bad for awhile. I don't know for certain, but it sure looks like a leech (segmented body, suction cups on both ends). It never tried to nibble on me while I photographed him, and I put him back when I was done taking his picture.

This is a very common millipede, probably the Garden Millipede (Oxidus gracilis). They can be found both indoors and out, and are harmless. They eat decaying vegetation. Some millipedes can give off an irritating liquid when threatened, but these guys merely form a tight spiral for protection.

This is a centipede, probably a Stone Centipede (Zygethobius ecologus). Centipedes are predators, using venomous claws to catch and kill prey. Some centipedes can thus deliver very painful stings to humans, but I doubt this little species could. He's about the same size as the millipede in the previous picture, and I found him in the house hunting small arthropods like the millipede.

Here's a good close-up view of a couple of garden slugs (species unknown).

These tiny snails showed up in our pond a few months after we first put it in. They feed on the algae that grows on the plants and rocks, and lay jelly-like egg masses on the plastic lining of the pond (they're not visible in this picture; the strings of eggs you see here are from a toad).