Left: usual pale mantle with unusual orange gills.
Oosterschelde, Netherlands. July 2022. :copyright: CC_BY_NC, G. Biscop.
Right: usual pale gills with unusual intensely blue body, perhaps from eating vivid blue alien sponges which live in the Oosterschelde, Netherlands. June 2022. :copyright: CC_BY_NC, C. van Westing.
Full SPECIES DESCRIPTION at flic.kr/p/2o8Nduc
Sets of OTHER SPECIES at: /