“I didn’t know what was happening — the water, usually clear and blue, was brownish red and murky.” Emily Pomeroy, a program manager with Save Our Shores, recalled a visit to Monterey’s Del Monte Beach in the summer months of 2019. “I’d heard of red tides before … but I had never seen one in person,” she said. These periods of discolored water that Pomeroy had stumbled upon can be called a “red tide” though in reality they are better known as a “harmful algal bloom.” They occur when water temperatures and nutrient levels rise, Pomeroy learned, and often lead to devastating consequences for marine life and those who depend on it.