The differences in engineers for space versus the ocean are fascinating. You'd think space stations and submarines would be interchangeable because they both deal with pressure differentials, right? Wrong. They'd fail in fascinatingly different ways within minutes or hours in the opposite environment
replyProfessor Hubert Farnsworth: Dear Lord! That's over 150 atmospheres of pressure!
replyFry: How many atmospheres can the ship withstand?
Professor Hubert Farnsworth: Well, it's a space ship, so I'd say anywhere between zero and one.