E. complanata’s defining characteristic, the harpoon=like chaetae, is also the species greatest defense mechanism when confronted with a situation where crypsis is impossible.
Despite the impressive array of bristles, E. complanatas’ first defensive instinct is flight, rather than fight. Any gap, crevasse or hole will swiftly be utilised when this animal is confronted with a potential predator or inquisitive biologist (figure 1). Failing that, the fireworm reacts by curling in a tight ball, allowing maximum exposure of its calcareous bristles. It will remain in this position until it deems the environment safe enough to retreat to more comforting abodes.
Figure 1 A fleeing E. complanata, seeking protection after being disturbed be an inquisitive biologist. |