Possible Clues:

• Crab or lobster
• Such as shrimp or lobster
• Stepped over unusual tailless sea creature
• Crustacean with ten feet or arms
• Say, crab's speed when turning up in surprisingly odd location
• Lobster last month joined up with a shoal of whiting
• Cook stepped up with lobster, say
• Retiring party took steps to obtain lobster
• Crustacean with five pairs of walking limbs
• Such as shrimp or crab