 Perhaps no other animal in the ocean is more well-known than the white shark, also known as the Great White Shark. But despite their fame and reputation, they may also be the least understood. White sharks, aptly named for their bright white bellies, are actually two different colors. Their top half is dark grey-brown, while their lower half is white. This allows them to blend in with deep water from above and with the sky from below. This coloration makes them harder to detect by their prey, which consists mainly of fish, seabirds, and seals. As predators at the top of the food chain, sharks play an important role in maintaining the health of the entire ocean ecosystem. White sharks have a notable impact on the behavior of their prey, changing their feeding habits and diet, and helping to remove the weak and the sick. These large fish have probably been in Atlantic-Canadian waters for longer than we thought, but technology and media coverage is increasing our awareness of their presence. While the movies and the media often portray these large predators as ruthless killers, situations where white sharks injure humans are extremely rare and often occur when people are mistaken for seals. The currents that flow through the Gulf of St. Lawrence bring an abundance of fish and marine life. The rocky and tidal coastlines are ideal for colonies of seals to come ashore, to mate and rest. The coastal and offshore waters here also provide an abundance of food for seals. The large number of seals in the Gulf is an inviting feeding ground for white sharks. White sharks are listed as endangered in Canada under the Species at Risk Act. Threats to their populations include fishing, marine pollution, and climate change. While the habits and migrations of white sharks are still largely a mystery, science is helping us to better understand their movements. In 2018, the first white shark was tagged off the coast of Nova Scotia in Canada. That shark stayed in Canadian waters for two months, allowing scientists from fisheries and oceans Canada and their partners to collect valuable information on water temperature, diving behavior, and the shark's location as it traveled through the area. Tagging white sharks is helping us to understand why and how they are using the Gulf of St. Lawrence and giving us information about these animals that are an integral part of our oceans' ecosystems.