A team of marine biologists from Japan and Australia has discovered a new species of shell-forming sea anemone, Paracalliactis tsukisome, in Japanese waters.
This species secretes a unique shell-like structure known as a carcinoecium, expanding the living space of its host hermit crab.
Image credit: Yoshikawa et al., doi: 10.1098/rsos.250789.
Author's summary: New sea anemone species discovered in Japan.