"Eelgrass Dancing'' (steel and lacquer), by K. GRETCHEN GREENE, in her show at Artisan's Asylum, Somerville,  Mass., May 21-June 4.

Eelgrass, by the way, is a salt-water plant essential for the survival of many coastal  animal species -- including many that we eat -- in New England. Far too much of it has been destroyed by man-made pollution and coastal development.  Public and private groups have made efforts to restore eelgrass beds in some places, such as Narragansett and Buzzards bays.