- ... that all that remains of the type specimen of the Mediterranean slipper lobster is a 16th century watercolour (pictured)?
- ... that the blind crustacean Polycheles typhlops preys on fish and on other crustaceans, probably acting as an ambush predator?
- ... that Edward J. Miers was paid 60 guineas for his monograph on the crabs of the Challenger expedition?
- ... that the genus Platythelphusa represents the only evolutionary radiation of crabs to have occurred in a freshwater lake?