But the sea spider has no gills or lungs, and its skin is an exoskeleton, a bit thick for absorbing oxygen. What it does have are hundreds of pores.

Most spiders have structures called “book-lungs,” but these are quite unlike the lungs of vertebrates or snails or land crabs. They open to the outside underneath the front part of the abdomen ...

Cutaneous spider nevi (12 cases), finger clubbing (4 cases) and clinical cyanosis (2 cases) had been noted during life. Esophageal varices, indicating portal hypertension, were present in all cases.

Antarctic sea spiders have no lungs or gills, so how do they get oxygen into their bodies? The answer is in their pores.

You can find a sea spider living in marine habitats all over the world, from shallow waters to the deep sea. They have the same eight legs you'd expect from land spiders, and like most species of ...

You can find a sea spider living in marine habitats all over the world, from shallow waters to the deep sea. They have the same eight legs you'd expect from land spiders, and like most species of ...