[quote=@Agunimon]

I might be misremembering but I think Wailord is full of air so they could probably survive inside of its mouth in the ocean depths and use that to dive down, but as far as being able to see out or conduct research... on second thought maybe not the best plan. 
[/quote]

See that's what my problem was lol, also this basically a whale that I am crawling into its mouth and expecting to carry me down to the depths of the ocean, it was just a weird concept like the pressure change once it opens its mouth you lose the sealed air and wont have a way to regain pressure to reascend, guess thats what the research is for in part is to figure out how to do this lol