Crabs have an open circulatory system, which means that their blood passes through cavities, called sinuses. The sinuses are low pressure compared to the ...
Although they are called crabs, they are more closely related to spiders and scorpions, and their annual mating migration is an incredible sight to see. The ...
You will see a giant spider crab with missing legs attempt to catch a rattail fish prior to being captured by the submersible. Video courtesy of Peter Etnoyer, ...