Leidya bimini is an isopoda parasite present in the Gulf of Mexico.

[1] Leidya bimini is a species known to parasitize Pachygrapsus transversus and Armases cinereum, crab species.

In 2002, researchers conducted an examination of the grapsoid crab A. cinereum.

The study found that 3.7% of A. cinereum, in the Tampa Bay area, were infected with L. bimini.

Like most Bopyrids the species experiences sexual dimorphism, the female being larger than the male individuals.