Hammerhead sharks have seemingly disappeared from two underwater mountains in the southwestern Gulf of California, and fishing is likely to blame, a new study has found.
Researchers looked at observations from divers over the last 50 years and found that scalloped hammerhead sharks (Sphyrna lewini) experienced a 97% decline at the El Bajo seamount and a 100% decline at the Las Animas seamount — both off the coast of Mexico — between the 1970s and 2010s.
