In La Ensenada on Colombia’s Pacific coast, local women embark on regular downriver journeys to harvest shellfish from a nearby mangrove forest. This short documentary by the Peruvian filmmaker Guille Isa and the Colombian filmmaker Angello Faccini follows a local mother as she tries to teach her eight-year-old daughter, Dulce, to fend for herself in the water. With climate change bringing rising tides and erratic weather to the coast, Dulce’s swimming lessons are both a communal rite of passage and, increasingly, a matter of survival. With a subtle, evocative style, Dulce is a humanistic and resonant portrait of one of the vulnerable communities living at the knife’s edge of the climate crisis. Dulce was a favourite on the film festival circuit in 2019, screening at the Sundance Film Festival, Toronto International Film Festival (TIFF) and Palm Springs ShortFest, where it won Best Documentary.