Marina del Rey is a large, man-made harbor in Los Angeles County, California, and is the largest of its kind in the United States. Its primary character for paddlers is one of protected, flat water, especially within its interior basins, making it a highly recommended destination for beginners, families, and those seeking a calm experience away from ocean surf. The harbor's layout consists of a main channel with several branching residential and commercial basins, offering a variety of scenic routes from quiet waterways lined with boats to areas with views of the detached breakwater and Santa Monica Bay.

The most prominent and recommended launch site is Mother's Beach, located at the end of Basin D. This site features easy beach-entry access from sand, ample parking, and is explicitly noted as a free launch point for hand-carried small craft like kayaks and paddleboards. Other public access points include a boat launch ramp on Fiji Way in Basin H, which charges a fee, and a dinghy launch at Dock 77 on Mindanao Way. Paddling is confined to the harbor itself; rentals explicitly prohibit ocean use, and venturing beyond the breakwater is not a typical activity. The harbor is a working area with significant boat traffic, including tour boats and private vessels, particularly in the Main Channel. Paddlers must be vigilant, especially as afternoon winds can create chop. A specific hazard noted is the presence of stingrays in shallow areas like Mother's Beach, requiring a "stingray shuffle" when entering or exiting the water. Wildlife sightings can include California sea lions and various birds.

The best times to paddle are in the morning when winds are typically light and the water is at its calmest; afternoon winds are a consistent factor that can make conditions more challenging. The overall vibe is community-oriented and relaxed, with a local paddle culture distinct from busier nearby beaches. Facilities at Mother's Beach include restrooms, picnic tables, and playgrounds. Multiple local outfitters offer kayak and paddleboard rentals and lessons directly on the beach. There are no specific restrictions mentioned beyond standard safety rules, such as the requirement to know how to swim for rentals and the use of personal flotation devices.