Urchins sometimes camouflage themselves with bits of seaweed, shells and small pebbles. Urchins are dragged from the bottom using a specially designed gear which protects the urchins from being crushed by limiting the number of rocks picked up in the gear. Scuba is also used to collect urchins in Maine but no one still dives for urchins in the Grand Manan archipelago. The roe is extracted in processing plants and sold in the Japanese fish market. Regulation of the urchin fishery involves licensing, quotas, minimum shell size, seasonal closures, and designated fishing areas.
Periwinkles are grazers of seaweeds.
Periwinkles are picked from rocky shores at low water, placed in mesh bags and left in salt water for a couple of days to let the periwinkles excrete sandy particles, etc. The periwinkles are steamed and then removed from the shell with a toothpick. Similar to escargot, they are tasty with garlic butter. Periwinkles are bought and sold by Roland's Sea Vegetables . This is the clam which squirts water upwards when you walk over tideflats.