Image of the Week #86, April 1st, 2013:
From: Sea hares thwart spiny lobster attack with goo by Becky Crew at Running Ponies.
Source: Genevieve Anderson
A sea hare secretes purple ink to confuse and repel nearby predators. New research shows that these secretions also mimic the stimulatory properties of food, giving would-be predators a decoy meal to pursue, thereby adding another layer of defense for these squishy molluscs.