Whole Australian Spanner Crab Raw (Frozen)Names for the strange creature are derived from its frog like appearance and its enormous front pincers, which resemble spanners or wrenches. Spanner crab is a good choice for buyers concerned about sustainability, as the selective harvesting method eliminates bycatch. In Australia, the crabs are trapped in baited net bags known as dillies. Australian spanners are available year round except for a month beginning at the end of November, when they