Mexican environmental authorities have released the necropsy results for two dolphins that died in October at separate tourist attractions in Cancun, and the findings tell two very different stories.

The Federal Attorney General's Office for Environmental Protection, known as Profepa, confirmed the death of Mincho at Dolphin Connection Cancun on October 30. The autopsy found that a carcinoma on his tongue had spread to other organs, leaving him beyond the reach of veterinary care. His death, in other words, was illness rather than negligence.

Moana's case at Sonora Dolphinarium is more troubling. She died on October 1, and follow-up inspections traced the cause to a blow to her liver — most likely from a light fixture dislodged by gusts from Hurricane Polo. The trauma altered her behaviour and appetite, and she never recovered. Whether a hurricane-related accident counts as an unavoidable tragedy or a facility-failure issue is exactly what Profepa is now working through.

The agency says it has carried out repeated inspections at both sites and is checking compliance with animal management plans, veterinary protocols and facility conditions. It has also signalled it is prepared to pursue administrative and criminal liability where rules were broken, with sanctions available under Mexican environmental law.

For travellers, this is a reminder of what sits behind the dolphin swims and marine park experiences heavily marketed across the Riviera Maya. Cancun's captive-dolphin industry is a major draw for visitors, and it operates under federal wildlife welfare rules — rules that are only as strong as the inspections and enforcement behind them. Profepa says oversight at both facilities will continue on an ongoing basis.

If you're booking an animal encounter in the region, it's worth asking operators about their veterinary protocols, facility accreditation and welfare standards before handing over money — especially as regulators are actively scrutinising these very businesses. And with hurricane season running from June to November, the Moana case shows how storms can affect animals in captivity in ways most visitors never hear about.

Story reported by Riviera Maya News.