Related Clues:

• It lacks a pelvic fin
• Anguilliform creature
• Snaky critter
• Sinuous swimmer
• Marine menace
• Sashimi fish
• Slippery sort
• Fish lacking pelvic fins
• Puget Sound whale
• Epitome of slipperiness
• Thing in the sea
• Lithe swimmer
• Type of whale
• Danger to divers
• Sniggler's prey