Courtesy of Noma Sloan displays a sea urchin he plucked from the sandy seafloor ... those wee beasties that look like squash balls encased in pine thistles. Sloan’s aquatic treasure hunts ...

Considered a delicacy in several parts of the world, sea urchin, or uni in Japanese, is prized for its unique flavor. But the cost of the gonads — the orange tongues found inside an urchin ...