Morvaks were unusual creatures that resembled large crustaceans that were meters across. They were considered an unusual example of life as they gained sustenance from rocks and stones. Furthermore, they did not require 'standard' liveable conditions such as gravity or atmosphere and thus had no problem surviving in environments like asteroid belts. The only requirement they needed was an abundance of food sources. Should none be present then they would enter into a state of hibernation till new food sources developed, a process that would sometimes take many years.