Giant Antarctic sea spiders breathe really strangely
These creepy-crawlers absorb oxygen through their skin and pump blood with their guts
Ilima Loomis
Aug 14, 2017 — 7:00 am EST
Tim Dwyer
Sea spiders just got weirder. The ocean arthropods pump blood with their guts, new research shows. It’s the first time this kind of circulatory system has been seen in nature.
It’s been no secret that sea spiders are bizarre — and more than a little creepy. Full grown, one could easily stretch across a dinner plate. They feed by sticking their proboscis into soft animals and sucking out the juices. They don’t have much room in their bodies, so their guts and reproductive organs reside in their spindly legs. And they don’t have gills or lungs. To cope, they absorb oxygen through their cuticle, or shell-like skin. Now scientists can add an especially odd circulatory system to this list.
https://www.sciencenewsforstudents.org/article/giant-antarctic-sea-spiders-breathe-really-strangely