from The Century Dictionary and Cyclopedia
- n. A curl-crested penguin; a penguin of the genus Eudyptes, as E. chrysocome or E. chrysolopha; a macaroni: so called by seamen from the way they hop over the rocks in places where they congregate to breed. See cut under Eudyptes.
Sorry, no etymologies found.
In the 1980s, rock-hopper trawls were invented; the large tires and rollers that were attached to the bottom of nets allow the nets to roll over any rough surface.
Tom stopped after getting over the stones like the rock-hopper penguin.
"Hang his insolence!" muttered the middy; and as Tom lowered himself from the post and then went, rock-hopper fashion, down the steps and boarded the boat, the young officer gave Aleck a supercilious stare up and down, taking in his rough every-day clothes and swelling himself out