Dark and lonely... And maybe that's why Pikachu doesn't want to even get nearly sucked into one... Pikachu is a happy pokemon and it's way too sad for it <3
Well if it's like how it is in pokemon special, where the top half is transparent, they can see outside the pokeball... But they still couldn't see very well, seeming as they're usually on a trainers belt and stuff.
Well,I've read the manga,and if a Pokemon were inside a Pokeball,they were 'minimized',lol,and the top is transparent and the bottom is not..and it's kinda scary because...the space is too small...any Pokemon may were not very happy inside it XD and If the Pokeball broken,oh noes! We CAN'T GET OUT!!!! D: Imagine IF we were inside a pokeball..how creepy...0_0
You wouldn't see anything cause the pokemon inside would be sleeping. My clue was in the book 'time out for torchic' nurse joy said to may "It's fine, it only needs a goodnights sleep." which means that torchic slept inside it's pokéball. So you fall asleep straight away.