Toniná's expropriation means that not only will the site be open to the public and to researchers, but also that it will be used to promote and implement responsible tourism after years of closure.
First detected off the coast of Pajapan on Monday, the spill has since spread to the municipalities of Tatahuicapan, Mecayapan, Coatzacoalcos and Cárdenas, Tabasco, affecting at least 150 km of coastline.
Evacuation has been complicated by the number of countries in the region that have closed their airspace, and by the need to identify safe land routes.
Reported by the national statistics agency INEGI last Friday, the year-over-year increase was the largest for the month of January since 2023, when export revenue surged 25.6%.
On Tuesday, Sheinbaum heaped praise on the Mexican Army — which she described as "something special" and "unique in the world" — and rejected claims that Mexico has been militarized by her government.