One of my favorite dive sites on the west coast of Puerto Rico is Crashboat in Aguadilla. This shore dive is easily accessible for all levels of diving, and you're guaranteed to see something amazing on this artificial structure.
Crashboat is named for this once Air Force based marina, where the "crashboats" would deploy to retrieve the crashed planes from training sessions of Air Force pilots. It was later abandoned and turned into a recreational area for locals and dive enthusiasts.
Scout the pilings for seahorses, frogfish, octopi, and lionfish. At maximum depth of 30 feet, find a sunken base where bigger fish like to hide. Bring your flashlight to scope out the interior.
Not a diver? No problem. Enjoy the sandy beaches, reggaeton music, and aromas of delicious Puerto Rican food all day long. One entire side of this recreational park is lined with street vendors selling food, handicrafts, and drinks. Want that true Puerto Rican vibe? Want to see how the locals relax on a weekend? Crashboat is your place.
But if you're not interested in the crowds, come here in the morning on a weekday. I dive here regularly, and I avoid crowds by diving early. Enjoy!