nadj

pheated rivarly is real

hands were shaking at the speed with which i drew this — inspired heavily by this post and obviously recent events

The crabs will force the anemones to clone themselves if one dies OR steal others’ anemones if both die

They haven’t found these anemones in their free-living form, so, as far as we know, this anemone species is these crabs’ slave species—it’s only known in association with pom pom crabs

Cool paper on this: Schnytzer, Y., Giman, Y., Karplus, I., & Achituv, Y. (2017). Boxer crabs induce asexual reproduction of their associated sea anemones by splitting and intraspecific theft. PeerJ, 5, e2954. https://doi.org/10.7717/peerj.2954

Their anemones aren’t a unique species, they are only visually distinct because the crab farms them in a very specific way - making a fragment of a larger hawaiian anemone, or finding a newly spawned one. When they carry it around, they force the anemone to adapt to an entire new lifestyle. The crab’s nocturnal behavior slowly kills the anemone’s photosynthetic symbionts, from which it gets its color. After that, the crab can control how much food the anemone actually gets by using it to mop up food off the sea floor, and take excess out of its mouth. Since it doesnt have to reach for sunlight, or reach to catch food, this encourages dense, but short tentacles.

The shortcoming of this study was just that its very hard to get the anemone away from the crab without killing both, and its equally hard to get an anemone to bounce back from this state.

Opal-rumped Tanager (Tangara velia), family Thraupidae, order Passeriformes,