Mexican Navy hopes to expand net-snagging hooks to protect endangered vaquita porpoises

Paula Olson / National Oceanic and Atmospheric Administration via AP file

This undated photo shows a vaquita porpoise in an undisclosed location.

SAN FELIPE, Mexico — Mexico’s Navy said Wednesday it is planning to expand the area where it sinks concrete blocks topped with metal hooks to snag gill nets that are killing vaquita marina porpoises.