Jesse Owens' courageous achievement. A look back at the amazing feats of Jesse owens, winning four gold medals in Berlin in 1936 and defying the hatred of Hitler at the same time. Share this.
Report Abuse. Blue, due to the hemocyanin. Crayfish and many other organisms use copper to carry oxygen instead of iron like humans, so their blood is blue. http://www.hostourcoast.com/photos/posts...There's a picture of horseshoe crab blood, which is very similar to crayfish blood.ating Newest Oldest. Best Answer: Many lower animals carry oxygen in their blood stream by means of a dissolved substance called hemocyanin ,this pigment is blue in color. So crayfish has blue blood like lobster, crab, scorpion, octopus, squid, clam and mussel.
Procedure Part 1-Externa/ Anatomy of a Crayfish. 1. Put on gloves. Place a crayfish dorsal side up in a dissection tray. Use the diagram below to locate the cephalothorax and the abdomen. The carapace, a shield of chitin, covers the dorsal surface of the cephalothorax.