The authorities said there were no initial reports of damage from the quake, which struck in the hills west of Malibu.

Southern California experienced 15 seismic sequences with at least one magnitude 4 or higher earthquake — the highest total in 65 years.

A magnitude 2.5 earthquake was reported Sunday afternoon at 1:04 p.m. Pacific time less than a mile from Malibu, according to the U.S. Geological Survey. The earthquake occurred four miles from Westlake Village, four miles from Thousand Oaks, seven miles from Agoura Hills and nine miles from Camarillo.

When some algal blooms grow out of control, they can emit a neurotoxin that accumulates in small fish, like sardines and anchovies. When sea lions eat those fish, the toxin binds to their brain and heart. They can have seizures, tremors, vision issues and even cardiac problems.

An unusually high number of disoriented marine mammals, sickened by a toxic algae bloom, is being found along Southern California’s coast, prompting concerns 2025 could be the deadliest year yet.