Related Clues:

• Snaky critter
• Sinuous swimmer
• Sashimi fish
• Nuclear energy source
• Generator, of a sort
• Slippery sort
• Fish lacking pelvic fins
• Epitome of slipperiness
• Thing in the sea
• Lithe swimmer
• Danger to divers
• Sniggler's prey
• That's a moray
• Nearly scaleless fish
• Anago, at a Japanese restaurant