Humboldt Bay is a natural harbor located on the northern coast of California. It is the largest estuary on the state's coast and serves as an important ecological and economic resource. The bay is surrounded by the Humboldt Redwoods State Park and is home to diverse wildlife, including various bird species and marine life. The bay is also significant for shipping and fishing industries, providing a deep-water port for commercial activities. The nearby city of Eureka plays a key role in the region's economy, with the bay serving as a hub for tourism and recreation, including kayaking and boating.