I should probably start this with the type of warning you see on programs now. This post contains images of a sexual nature. It may not be suitable for everyone.
This year I have been following a daily routine of checking behind and under pots for snails and slugs. It seems to be working and I have had a lot less snail damage on my plants. Today I was a bit surprised to find this.
I have seen wildlife photos and programs about snails mating, but never caught any in the act.
I considered leaving them to their moment of happiness, but then remembered my plants and they were disposed of.