Green Shocker

The green shocker replaced its ancestor the green swarmer due to one important evolutionary change. While very similar to its ancestor in appearance, except for having one more tail to propel themselves, the gene found in their ancient ancestor, the strainbean, that created bioelectricity resurfaced. This was beneficial to the green shockers because the minute amounts of electricity released when they were about to be eaten was enough to repulse predators resulting in their survival and the decimation of their ancestors. However, they are still able to be eaten by intelligent predators which realize that after they have used their 'shocks' once it takes time for their bodies to recharge themselves.

Another bonus the green shocker evolved was being able to sense electrical currents in the water. This allows the green shockers to sense each other and thus they travel across the ocean in huge swarms. When looking at the water one would see a mass of green dots lazily moving through the water. This bonus also allows the shockers to reproduce quicker since they are already around their own species.