Ryan calls Kyle and asks why he hasn't started the podcast Ryan wants him to do. zooxanthellae are a tiny algae that look like a cell. They live symbiotically inside the cells of coral (coral is an animal related to jellyfish). They photosynthesize, and provide most of the energy for coral, the coral provides a home for the zooxanthellae. The zooxanthellae are very sensitive to environmental changes, they start geeking out, and the coral ejects the zooxanthellae, spits it right out of the cell. When a coral ejects too many zooxanthellae , it dies.