Board Thread:Warhammer 40k General Discussion/@comment-7499389-20130407223055/@comment-3580035-20130408040026

Just because the armour can withstand the pressures doesn't mean the Space Marines can walk there... they'll be crawling, if not pinned to the ground.

Strange about the Emperor's Children though. One of the notable battles against the Tau was underwater, and only Terminators and Land Raiders are described as being able to reach the ocean floor. Maybe thats just because that ocean was too deep.