Sunscreen pollution is a result of rising tourism utilizing marine and freshwater environments as recreational resources. Popular lakes and coral reefs are impacted by sunscreen pollution. Swimmers put on sunscreen products before they get into the water, and over a period of an hour, much of the sunscreen on the skin will slough off, polluting the surrounding water. At many popular tourism areas, such as public beach parks and resorts, there is a nearby shower for swimmers to rinse off the saltwater and sand from their bodies. Many of these beach showers are not connected and carried away to a municipal waste water treatment source, but instead flow directly into the bay or lake. It was recently noted that these showers may be a significant point-source of sunscreen pollution into the local environment. For example, a beach-shower in Kahalu’u Bay Beach Park in Hawaii could be contributing to the astonishing high concentrations of oxybenzone and other UV and preservatives chemicals. The shower effluent has created a washout gully and drains right into the area where the highest concentration of oxybenzone on a coral reef was ever measured (3.0 parts per million). Almost every public and resort beach-shower in Hawaii drains directly into the ocean. Many iconic and popular coral reefs are putatively being degraded by sunscreen pollution, such as Waialea Bay (Picture of Waialea Bay Beach-shower). This issue afflicts not just Hawaii, but every highly visited beach-site around the world that allows its effluent to drain immediately back into the environment. This environmental contamination is a grave concern because it has been extensively established in the scientific literature that many of these sunscreen chemicals and preservatives are toxic to wildlife, such as fish, corals, and macroalgae (see Oxybenzone and NOAA infographics). As a Community Citizen Science led initiative, we want to determine if beach-shower effluent discharge is contaminating its surrounding environment. To this end, we have sampled beach-sand in the washout gullies of 8 showers in public parks and a resort in the Hawaiian Islands. We sampled the shower gullies along a two-point transect, within 1 meter of the shower platform, and then 6 meters from the shower platform. We are hoping to sample an additional 4 more beach-showers, two of them in Hanuama Bay, Hawaii. One shower drains directly into the ocean, while a second shower is collected and drains into a municipal sewage system, and potentially does not drain into the bay. Sand samples will be analyzed for over 36 different UV sunscreen chemicals that are used globally (e.g., oxybenzone, octinoxate, Tinosorp M). The cost for this extensive chemistry analysis is U.S. $28,000. If the claim that “beach-showers with no municipal sewage collection are point-sources of pollution” is supported by the evidence we generate from this project, then to mitigate this point-source of pollution, beach parks will need to properly plumb beach showers to conduct the effluent away to a municipal or private waste water treatment system. We are the same group of scientists and concerned community members who successfully advocated for the Hawaii Act 104 to ban the sale of oxybenzone and octinoxate sunscreen. The scientific evidence generated by this study will be used to work with County, State, and Resorts to mitigate this point source of pollution so as to conserve and allow for the restoration of our coral reef and seagrass ecosystems.