The slow work of Costa Mar's beaches

The morning tide at Playa Colorada leaves behind a mat of seagrass tangled with plastic bags, fishing line, and foam. María Chacón, the coordinator for the Northern Beaches Cleanup Network, kneels to photograph each section before the crew begins. The sun has not yet cleared the palms. She speaks into her phone, recording the debris count: "Three bags, two metres of line, one foam cooler, approximately two kilograms of mixed plastic." The work is unhurried, methodical, and endless.

Over the past eighteen months, cleanup teams across Costa Mar's public beaches have removed 82.4 tonnes of plastic waste and 14.7 tonnes of nutrient-laden organic matter—seagrass, mangrove leaves, and decomposing matter that feeds algal blooms and threatens reef health. The figures come from the Costa Mar Marine Ministry's quarterly tally, released this week. They represent progress. They also represent a crisis that grows faster than volunteers can collect.

The nutrient surge—nitrogen and phosphorus from agricultural runoff and residential septic systems—arrives invisibly. The plastic arrives by tide, by current, and by the carelessness of boats and shore-dwellers. Neither can be collected once it is distributed across the water column. The beaches are where both converge, and where the region's ecological anxiety becomes visible.

What began as a seasonal volunteer effort in 2021 has become a permanent operation, now employing thirty-seven paid crew members across six beaches and supported by rotating teams of tourists and residents. The work is funded by a combination of federal conservation grants, local eco-tourism operator donations, and a small municipal budget. The question that shapes every weekly count is whether the funding will outlast the debris.