Related Clues:

• Isle surrounder
• See 85-Across
• Sign of neglect
• Plethora
• Domain of the goddess Tethys
• Adriatic, for one
• Where to find many good schools?
• High __
• ___-green
• Dead expanse
• Black and Red, for two
• 27-Down's milieus
• Urchin's place?
• Coral habitat
• Sargasso, e.g.