CRUSTACEA, amphipod, males sexually mature while young, ii.
"The Descent of Man and Selection in Relation to Sex" by Charles Darwin
' Supergiant ' amphipod discovered in deep sea near New Zealand.
' Supergiant ' amphipod: An expedition from the University of Aberdeen has yielded rare specimens of a giant, pale crustacean living 4 miles beneath the ocean surface.
Amphipod to diatom to bacterium , in one GIF.