How Denmark’s oysters are transforming foodies into citizen scientists

Lea Meilandt Mathisen, CC BY-NC-ND

This year 80 people put on their waders, grabbed buckets and quadrats (square metal frames), and splashed through the clear shallow waters. Once they reached one of the many sampling locations, marked by miniature floats, they threw their quadrats into the shallow water, ready to collect all the sea life that landed inside their quadrats.

No one had any idea what they might find living on the seabed until they reached into the water. Nearby, kids peered down at the seabed using underwater scopes...