The flooding water can also spark many dangerous oil spills. The water spills onto the desert floor. Other threats include shipping accidents, oil spills, and tropical cyclones. Marine environments are especially vulnerable since pollution such as oil spills are not containable. Upon surfacing, it spills the water from its throat pouch before swallowing its catch. Oil tankers are only one source of oil spills. Oil tankers are just one of the many sources of oil spills. Accidental oil spills happen frequently with an average of 10 spills per year. Regulations are created to help mitigate such oil spills. Physical cleanups of oil spills are also very expensive. Waterkeepers maintains a national watch that documents numerous crude oil spills annually. Activities will include such actions as removal of dumps and fuel spills. There have been three major oil spills in Guanabara Bay. Struck with a feverish passion, she spills hot oil from the lamp and wakes him. However, Ashley accidentally spills her coffee onto the camera, frying it.