Sea urchins can be found in deeper pools in the lower portions of a tide pool. Most all the urchins are the common purple urchin but once in a while, the larger red urchin can be seen. On this episode, the team visits Goff Island in search of sea urchins and learns how they survive, what do they eat and what happens when they run out of food. A trip to the Cabrillo Marine Aquarium is followed by a visit to Catalina Offshore Products. Viewers are then taken a tour of the sea urchin processing facility.