Jellyfish Swarming in the Gulf of Mexico

This swarm of jellyfish is the result of nirtogen and phosphate runoff into the Mississippi basin from agricultural fertilizors and animal waste. The nutrient-rich water creates massive explosions in algae bloom (phytoplankton) that attracts equally large blooms of zooplankton, which in turn invite jellyfish to join the feast. The invitation, however, reads " Fishermen are not welcome!"