Looks like a cross between a scorpion and a tick.
same as this guy http://www.inaturalist.org/observations/822945
Bee drinking from water fountain
Crayfish + digitalvapor
Tiny (less than 1/4"), spreading everywhere on old sea lettuce. Each has a tiny reddish orange top.
About 1/2". Was found on sea lettuce, which was pumping out bubbles of oxygen which stuck on the limpet's shell.