There is another big problem facing marine life. It is being done for the sake of fashion and exotic home décor, which is a $330 million dollar industry. An estimated 70-90% of marine aquariums are collected illegally using poisonous cyanide. Other poisons such as bleach, formalin, and gasoline are also used. This not only reduces biodiversity but also removes key components of the reef ecosystem, including algae grazers, which help maintain ecosystem health. Coral reefs contain some of the largest diversity of life in the world. They are home to thousands of different plants and animals.