This season, some red king crab could be worth over $30 a pound. That is, if they’re wrapped in pink or green string and seem to have some sort of capsule attached to them.

The Alaska Department of Fish and Game, the National Marine Fisheries Service, and the Marine Conservation Alliance are once again teaming up to collect archival tags on harvested crab. Those tags contain information – like water temperature and depth – that provide a better understanding of crab migration.

If fishermen find crab with these archival tags, they can be delivered to ADFG for a reward of $200 and a baseball cap. If they return crab with just the green and pink spaghetti tags, they will receive just the cap.

The partnership also tagged some opilio crab, and those tags are expected to be recovered in the winter.