Mejillones is a surf spot that attracts serious surfers due to its reputation as a swell magnet. Located on an uneven reef, it offers plenty of water over it and various take-off spots. Surfers looking for a challenge can find it here, especially when the swell gets big. The area can get crowded at times, but it mostly draws local riders who know the ins and outs of the waves.

This spot works best with a small, peaky west swell, ideally handling sizes around 3 ft (0.9 m), but when it gets double overhead or more, Mejillones can really test your skills. The waves break both left and right, and there are some powerful and fast hollow sections that catch even the most experienced surfers off guard. It’s crucial to keep in mind that the wave size and power can make it look less threatening than it really is.

For those considering surfing here, it's important to be prepared for tricky entry and exit points due to rocks and urchins. The currents at low tide can be quite strong, so understanding the tide heights is essential, as Mejillones can work well at low, mid, and high tides, particularly with a southeast wind. This spot is tailored for expert surfers only, so make sure you’ve got the skills to handle what’s in store.