Ah, thank you John and Nyororin for your replies
I'm somewhat glad that a lot of these aren't common, although still not happy about the ammount of spiders, but as spiders are pretty common here too I suppose there's not much difference . . . and 8-10 centimetres is less than what I envisioned after seeing these photos and reading these posts, at least, lol! Still, the geji-geji are the creepiest things I've ever seen >_<
What are the 'stink bugs'? I've heard of them on some dubbed anime, assumed they were made up creatures or euthemisms, I never realised it was a real type of insect.
You know the more I read about Japan the luckier I feel to be in the UK . . . no earthquakes, and no geji-geji, lol.