for the use of Marina Chacala residents only,
looms over Chacala, not over the development
Although all the beaches in Mexico are open to the public, those with the cash and the political clout were allowed to fence this public beach off from public use (including local Chacaleno's) . Only the wealthy (Mexicans and U.S./Canadians) residents can access the lovely little Chacallila beach by land.
Of course, you can always hire a boat at the muelle to take you around the point to the Chacallila beach. The beaches are still public, even though the the Marina Chacala management is not providing the legally required access. It's also a good place to beachcomb for seashells.