However different in structure Trilobites may be, they all agree in possessing a head-shield usually semi-circular in shape, which results from the fusion of apparently five segments, and bears, except in some blind forms, a pair of large reniform compound eyes like those of the king-crab (Xiphosura).
The compound eye of the king-crab (Limulus) is the only recognized instance of ommatidia in their simplest state.
Menu options include gigantic Alaskan king crab legs that are flaky, light and full of flavor.
Alaskan king crab fishing jobs pose particular obstacles because of the unusual working conditions.
Fishing for king crab in Alaska is perhaps the most challenging maritime industry jobs.