Related Clues:

• Like an abyss
• See 113-Down
• __-sea
• ___ blue sea
• Worth thinking about
• Like the 10-foot end of the pool
• Diver's place
• Way down
• Profoundly
• Filled with import
• Seemingly bottomless
• Hardly superficial
• Bathysphere's place
• Like the sea
• Like some pockets