The animals are drained of some of their blood and returned for the atmosphere, but quite a few die from the bleeding. “The goal will be to provide the crabs which are bled a far better possibility of surviving and contributing into the ecosystem after they are released,” she stated. https://collincyowj.idblogmaker.com/29708799/a-secret-weapon-for-what-do-you-use-horseshoe-crab-blood-for