How hot is it? The answer is no laughing matter because hundreds of sick and dying sea lions and dolphins have been seen on beaches, the result of toxic algal blooms associated with warmer ocean waters and linked to high levels of domoic acid. Domoic acid is a naturally occurring toxin that can make humans and marine mammals sick. The biggest takeaway is that as ocean temperatures changed, there is the potential for more frequent and more extreme harmful implications.

Coral reefs cover an extremely small amount of the Earth’s surface, but support 25 percent of all marine life. People worldwide rely on coral reefs for food resources, protection from the damaging properties of waves, and economic benefits including recreation and tourism. Coral reefs are negatively impacted by changes in water chemistry (e.g., ocean acidification) and increases in water temperature and sediment levels. Because heatwaves are becoming increasingly frequent across the globe and ocean temperatures are rising, it is important to understand how reefs are impacted and promote their survival. This article discusses what is being done.