SANTA BARBARA COUNTY, Calif. – The number of sightings of dead or sick animals along the Central Coast has increased in recent weeks, which is thought to be due to an increase in domoic acid levels in the ocean.
The most affected populations are common dolphins and California sea lions, as well as shorebirds such as pelicans.
According to studies, sea lions and dolphins frequently coexist and hunt for food in the same areas.
In the past week, dead dolphins have been discovered in Ventura County, Santa Claus Beach, Hammonds along the Montecito coast, and near Stearns Wharf.
According to the Channel Islands Marine and Wildlife Institute (CIMWI), domoic acid poisoning is associated with “harmful algal bloom events caused by a specific type of algae, Pseudo-nitzschia australis.”
This neurotoxin accumulates in shellfish and small fish such as sardines and anchovies. When sea lions and other animals eat contaminated fish containing the toxin, it can be extremely harmful and even fatal if consumed in large quantities.
This is the fourth year of the algal bloom, which was previously a springtime event.
In recent years, it has also happened in August, September, and October.
According to CIMWI, recent wildfires and the subsequent runoff of ash and burnt materials could also be contributing factors.
If the public is concerned about a sick or deceased marine mammal or shorebird, they should contact the marine mammal hotline, and the (CIMWI) will do their best to respond.
It is a volunteer-run organization that relies on donations.
For more information contact : CIMWI
