Related Clues:

• Certain cephalopods
• Sea creatures that 'sing'
• Army swimmers?
• Sea creatures with eight arms
• Squid kin
• Ocean floor dwellers with many arms
• Ink-squirting mollusks
• Zoological plural frowned on by sticklers
• Pixar's Pearl and Hank, e.g
• They're armed to the gills
• Sea creatures with multiple arms
• Krill consumers
• Heavily armed sea creatures?
• Deep-ocean mollusks
• They have eight arms