It's fairly straightforward stuff, but makes nteresting reading all the same. And since they're legally protected we're obliged to leave them undisturbed.
Whereas a mink you can happily trap and roast on a stick. (Joke - honest!)
It means the SCA now has guidance notes on Otters, Freshwater Peal Mussels, Blackthroated Divers, and Fish Spawning.