The Grand Banks of Newfoundland are a group of underwater plateaus south-east of Newfoundland on the North American continental shelf. These areas are relatively shallow, ranging from 50 to 300 feet (15 to 91 m) in depth. The cold Labrador Current mixes with the warm waters of the Gulf Stream here. In addition to the effects on nutrients, the mixing of the cold and warm currents often causes fog in the area. It is also noted for its proximity to the sinking of the RMS Titanic and thus the launching point of Titanic shipwreck expeditions.