They look pretty much like oysters in most ways bar the cap, which is a bit unruly in shape. Probably just means means they’re old, though.
Yeah, some big ones that look old. Here is a smaller one that looks younger/fresher.
1 Attachment
Very oystery, looks like you’ve found some. They regrow in the same spot so will be there year on year too.
@Arducius started
London Fixed Gear and Single-Speed is a community of fixed gear and single-speed cyclists.
They look pretty much like oysters in most ways bar the cap, which is a bit unruly in shape. Probably just means means they’re old, though.