Hover over the faint blue squares to cause the water level to change as it would at that location in-game. This feature is under active development, and will improve over time. View the regular Lockjaw's Locker map here. Thanks to Kingizor for writing the script that powers this feature.
In addition to the warp barrel and bonus area entrance, toggling the first overlay button on this map reveals a set of arrows which show the access points for Lockjaw's Locker's secret passages.
Toggle Overlay button 3 to view a very basic example of the 'object movement info' I plan to include in all maps. In this example, arrows flash to indicate the direction each Shuri initially takes.