Possible Clues:

• Local freelance impossible to shake off
• Twisted cable ran to this underwater attachment
• One reluctant to leave pub (name Alec possibly)
• Pub not properly clean � it's very sticky
• Crustacean that sticks to rocks
• One that sticks salt in unmarked wrapper
• Marine crustacean exposed, retaining salt
• Crustacean or, alternatively, lean crab
• Crustacean that attaches to a submerged surface
• Check unusually clean sea creature