Gases are exchanged in the many filaments, and oxygen absorption is especially facilitated by hemocyanin. Purple king crabs show unidirectional air flow. This may be referred to as the circulation of drinking water in the U-shaped system; drinking water passes posteriorly with the incurrent opening, an opening in the carapace https://kingcrab79123.mybuzzblog.com/9402811/how-norwegian-king-crab-price-can-save-you-time-stress-and-money