Related Clues:

• Tiny shape-shifters
• Rather small swimmer
• Biology slide specimen
• One losing heart when taken in by a business graduate, low form of life
• Divisive creature
• Minute critter
• Microscopic specimen
• Tiny thing on a slide
• Tiny swimmer
• Slide creatures
• Little shape-shifter
• A leading entertainer in The Wild Bunch is a parasite
• Living blobs
• Perhaps pond-life seem to incite pub brouhaha, all ending in casualty
• Creature viewed in biology class