Marine scientists are intently monitoring the present northbound migration of grey whales to see if one other mass animal die-off occasion will occur once more this yr. The scientists are on heightened alert because of the mortality occasion that happened throughout the identical interval final yr.
In the course of the annual migration, which takes place in spring, japanese Pacific grey whales journey from the nice and cozy waters of California to feeding grounds close to Alaska. Your complete migration takes place from February to June.
Grey Whales’ Annual Migration
With a spherical journey distance of about 10,000 miles, the annual spring migration of the japanese Pacific grey whales is taken into account one of many longest journeys of mammals on Earth. After spending the winter season in Baja, the whales have already began their lengthy journey to achieve new feeding grounds.
Because the season shifts once more, these whales will embark on a return journey to the hotter waters within the California peninsula. The japanese Pacific grey whales normally start displaying up in these areas ranging from December to January of the next yr.
Final 12 months’s Mass Whale Die-Off
Because the whales start their lengthy voyage throughout the West Coast, scientists conduct commentary procedures to see if die-off would happen in the course of the migration. The scientists are frightened that the occasions that killed off over 200 whales final yr may occur once more.
In keeping with experiences, lots of of useless whales washed up on the seashores between Alaska and Mexico throughout final yr’s migration season. These embrace the 34 grey whales who have been stranded within the waters of Washington State, Seattle Instances reported.
Figuring out The Trigger Of The Die-Off
It’s not but clear what triggered the whale die-offs final yr. Due to this, it has been thought-about as an Uncommon Mortality Occasion by native authorities. In keeping with the scientists, many of the whales that died final yr appeared skinny and malnourished, which factors to a doable drawback relating to the dearth of meals sources alongside the migration route.
Because of final yr’s occasions, marine scientists are presently looking out for one more doable Uncommon Mortality Occasion. Nevertheless, in accordance with senior biologist John Calambokidis of Cascadia Analysis in Olympia, it’s nonetheless too early to inform if a die-off will occur this yr. “The restricted info now we have gotten thus far has been just a little ambiguous,” he stated in accordance with The Every day Astorian. “It could be one other month earlier than we all know for certain.”