Related Clues:

• Arm of the sea, e.g.
• Coastline irregularity
• Seashore recess
• Body of water
• Squid's feeler
• Arm of the sea?
• Sound, for one
• Narrow passageway for water
• Octopus arm
• Cove on the coast
• Firth, for one
• Shore recess
• Coastal cove
• Arm, perhaps
• Firth of Clyde, e.g.