Mexican authorities are investigating after 137 dead sea lions washed up on a beach with no sign of how they died. The country's office for environmental protection has said the animals do not have injuries from getting caught up in fishing nets or lines. There are also no marks on their bodies from possible collisions with boats.
Both scenarios are common causes of sea lion deaths or injuries. The environmental protection office said tissue samples had been collected from some of the bodies for analysis to determine how the animals died. The bodies were found along an 80 mile (130km) stretch of coast in the area of Comondu, in Baja California Sur state. California sea lions are a protected species in Mexico but are not considered to be in danger of extinction there. MSN
Baja California has long been an area of unusual mass marine die-offs, in February 2017, a red tide algae bloom was blamed for the death of nearly a 100 turtles off the coast of La Paz. The Federal Environmental Protection Agency (Profepa) reported that the specimens had no evidence of fishing gear or any human activity, saying that the cause of death was the Red Tide. Each of the turtles found had been dead for more than 8 days, a further 3 tons of krill were also found dead in the area.
On the 17th July 2017, Bcs Notacios reported- 7 dead whales found on the coast of Baja California Sur, Mexico.
In February 2018,54 dolphins were found stranded in the Bay Of Lapaz, Baja, California Sur Experts and helpers tried in vain to save the dolphins but 24 died. And on the same day 11 dolphins were found dead along the coast of Mazatlan, Mexico.
As usual in these circumstances, officials were left puzzled as to why the dolphins died.