Mexican Authorities Trace Gulf Oil Spill to Tanker Discharge and Natural Seepage

Authorities attribute recent shoreline contamination in Veracruz and Tabasco to a combination of natural seabed seepage and an unidentified petroleum tanker.

By: AXL Media

Published: Mar 27, 2026, 5:07 AM EDT

Source: Reuters

The Hunt for the Responsible Tanker

The Mexican Navy is currently investigating 13 vessels identified via satellite imagery as having passed through the affected zone. Four of these ships remain in Mexican territorial waters and are undergoing rigorous physical inspections. For the remaining nine vessels that have moved into international waters, Mexico has formally requested international cooperation to facilitate inspections at their next ports of call. The goal is to determine if any of these tankers experienced a structural leak or performed an illegal discharge of "oily waters" similar to the incident that caused a fatal fire at the Olmeca refinery on March 17.

Natural Seepage vs. Structural Failure

A significant portion of the black tar slicks washing up on Mexican shores has been traced to two specific spots of submarine oil seepage.

Primary Source: An ongoing natural leak from the seabed that authorities believe is the main driver of the current contamination.

Secondary Source: An intermittent seepage site that has since been contained.