Related Clues:

• ___-green
• Dead expanse
• Urchin's place?
• Coral habitat
• Close star
• Sargasso, e.g.
• Black or White
• Setting for many schools
• Word in ''America, the Beautiful''
• Milieu for 1-Across
• Space heater?
• Baltic or Irish
• Vast area
• Sargasso, for one
• Wave site