This is a snail growing a vegetable out of its back. Biologists have succesfully created a mutant organism of animal and plant. This was done for reasons of increasing crop yields or just for fun. For the snails (they are somewhat sentient in our comics) they think of it as a "Sustainable Green Solution" (growing your own food) to be able to live in a very polluted environment. The human counterpart of this idea is growing vegetables on your backyard. Is this for the good or bad, we don't know yet yet!
Sorry Nele! I know nature is your topic but i just can't resist the idea ^_^ This doesn't really fit the animal headed characters because it doesn't have human bodies...maybe this is a first experiement/evolution...
later on
It's actually a really funny and good idea... a nice metaphore of something... don't really know what... but it's a bit like a chinese poem in a way...