video above , recorded by researchers at the hebrew university of jerusalem , shows how that despite its body orientation -lrb- green arrow -rrb- the octopus can crawl in any direction -lrb- blue arrow -rrb- thanks to its flexible arms .
when a female swims by , the male argonaut sends his penis off to swim to the female and mate with her .
in fact , the penis is a ball of sperm in a tentacle called a hectocotylus and females can be fertilised by more than one that