study co-author and biological oceanographer Lillian McCormick analyzed data from 11 oceanographic sensor packages deployed on moorings off the coast of San Diego. These sensors were deployed at various depths, ranging from 1.5 meters (5 feet) to approximately 100 meters (328 feet) Shallower waters bore the brunt of the red tide impacts, experiencing prolonged periods of hypoxia. Construction near Los Peasquitos Lagoon led to the complete closure of the lagoon to the open ocean.