Fishermen on the coast of Japan witness a swarming crowd of jellyfish tangled in their fish nets. Pollution in the waters rise microscopic plankton that jellyfish feed on. As global warming raises temperatures in the seas, jellyfish migrate to cooler seas increasing dangers to beach dwellers and ruins fishermen’s work, dropping fish catches by 30 percent. People in the U.S. East Coast get stung 500,000 times each year. British Columbia researcher claims that the increase in jellyfish should be a warning sign that our ocean is stressed and unhealthy.