Related Clues:

• Felt ruthless, turning to block swimmer
• Genus of freshwater and marsh terrapins
• Reptile turning over in the soup
• eg Razorback
• Terrapin found in quite mysterious circumstances
• Saint Symen returns a little terrapin
• Reptile let loose after furrow was turned over
• One's helpless when upset, in cruel truth
• Water-dwelling reptile
• Mock or Teenage Ninja?
• Creature, retracing furrow, stalled regularly
• Marine tortoise
• This swimmer FBI's clobbered with rifle-butt?
• Reptile to go off, briefly let out
• The northern dash from East End to find marine animal