Mission Bay Jetty South is a shore-access dive site located at the southern jetty of Mission Bay in San Diego, California, adjacent to the bay entrance and navigation channel. It is known for beginner-friendly freediving due to its shallow depths, mild current, and mild surge, with the jetty providing partial shelter and varied underwater structure. Marine life commonly observed includes small reef fish, sea stars, and occasional sea lions, with the jetty rocks creating habitat and underwater relief. The surrounding area supports boating and fishing activity. Local operators or experienced local divers can be consulted for current conditions and safety considerations.

• Visibility: 5–15 m

• Depth Range: 5–15 m

• Water Temperature: 17–22 °C (summer), 12–17 °C (winter)

• Water Conditions: Mild current, mild surge; boat traffic present near the channel

• Seasonality: Best from May to October

• Transportation: It is reached by car to the Mission Bay Jetty South area, followed by a short walk to a shore entry point, with typical travel time from central San Diego of around 15–20 minutes depending on traffic.

• Local rules: No permits required; caution advised due to boat traffic, fishing activity, and potential entanglement hazards