As of my knowledge cutoff in September 2021, Morro Bay is home to a significant population of otters. However, the exact number can vary over time due to various factors such as habitat conditions, prey availability, and conservation efforts. It is recommended to consult local wildlife authorities, such as the Morro Bay National Estuary Program or the California Department of Fish and Wildlife, for the most up-to-date information on otter populations in Morro Bay.