Rising Dolphin Strandings on the Yucatán Coast Spark Concern

The northern coast of Yucatán is seeing a concerning rise in dead dolphins washing ashore.  

This ongoing situation has prompted investigations by environmental agencies and marine biologists across the region. 

The Most Recent Dolphin Deaths

Two more cases occurred over the past week. On Sunday, a tourist walking along the shoreline discovered the lifeless body of a dolphin near the Puerto de Abrigo in the coastal city of Progreso. The incident quickly gained widespread attention after a social media user named Uziel H. recorded a video of the stranded marine mammal lying on the sand and shared it on Facebook.

According to the visual evidence and initial reports from the scene, the dolphin had visible bleeding in one eye. Furthermore, the animal had other noticeable wounds across its body, suggesting recent physical trauma. 

This discovery caused significant commotion among beachgoers that morning. After the initial reports, biologists and specialized personnel arrived to inspect the animal and collect biological samples. These scientific experts are now tasked with conducting detailed studies to determine the specific cause of this sudden death.

Just yesterday, a second dolphin was found floating upside down, lifeless, and eventually washed ashore. 

A Growing Regional Pattern

The recent cases in Progreso are not isolated; they are part of a growing pattern across the state. On June 17, visitors reported finding another dead dolphin in Celestún. That discovery mobilized environmental authorities and drew large crowds, including local fishermen and tourism service providers. 

Specialists performed an open-air necropsy directly on the coast to gather immediate information about what happened to the cetacean within the waters of the Celestún ecological reserve.

Older reports also indicate a consistent history of such coastal events. For instance, a live dolphin stranding occurred in Santa Clara in March 2024, which required rescue and relocation by authorities. In January 2023, tourists also helped state authorities, including the Ecological Police and the Mexican Navy, rescue and release a live dolphin stranded near the Progreso boardwalk.

The Impact of Human Activity

The recurrent nature of these strandings forces researchers to evaluate multiple potential causes for the rising death toll. When a dolphin washes ashore with physical injuries, such as the wounds observed on the specimen found in Progreso this month, marine experts often look to human activity. Commercial fishing nets pose a major hazard for marine mammals navigating the Gulf of Mexico.

Dolphins can easily become entangled in both active and abandoned fishing gear. Once trapped in a heavy net, they are unable to surface for air, which leads to immediate drowning or severe physical exhaustion as they struggle to break free. The physical injuries sustained during these dangerous encounters can severely weaken the animals, leaving them highly vulnerable to secondary infections or predator attacks. Authorities actively use the data collected from coastal necropsies to understand if these recent deaths are directly linked to unregulated fishing practices in the area.

Environmental Factors and Natural Threats

Beyond direct human activity, the Yucatán Peninsula’s natural environment presents its own distinct set of challenges for dolphin populations. The region frequently experiences strong winter weather systems known locally as nortes. These severe storms bring high winds and sudden drops in water temperature, creating highly turbulent sea conditions.

A dolphin that is already suffering from malnutrition, advanced age, or an underlying disease can become easily disoriented during these harsh weather events. Once their internal navigational abilities are compromised, strong ocean currents can push them directly into shallow coastal waters. ]

By the time they reach the sand, they are often too exhausted to swim back into the deeper ocean. Disease is a standard variable investigated during every official necropsy, as internal parasites or viral infections can severely diminish a marine mammal’s ability to survive in the wild.