Blind Cave Shrimp (Troglocaris anophthalmus), Slovenia, August 2018

''Troglocaris anophthalmus'' is a species of freshwater shrimp in the family Atyidae. It lives in karstic caves in Bosnia and Herzegovina, Croatia, Italy and Slovenia. Although morphologically similar across its 500-kilometre range, molecular phylogenetics suggests that there are four or five cryptic lineages with more restricted ranges, although one such lineage does range unusually widely for a troglobite – over 300 kilometres .

Like other underground-living animals, this shrimp lacks.. more