The main concern regarding oil drilling off the Pacific Coast is all of the above.

Oil drilling off the Pacific Coast raises multiple environmental concerns. The most pressing is the impact on marine life, as drilling and oil spills can significantly harm ocean ecosystems, threatening fish, whales, and other marine species. Additionally, the risk of water contamination is high, which can affect the quality of water in nearby areas, making it unsafe for human consumption and wildlife. Moreover, oil drilling could lead to the disruption of fishing industries, as it may harm fish populations and negatively impact local economies reliant on fishing. These concerns fuel the opposition to offshore drilling.