The ocean appears homogeneous from the surface, but under the waves there are many different layers of seawater. As an organism travels from surface water to deeper water, it may encounter sharp changes in temperature, salinity, and other physical factors. In this activity, students try to find Davy Jones’ Locker – a mythical place between the surface and the sea floor – by adjusting the density of an object to make it float between layers of seawater.

Labs taught a Project O take place over 2.5 hours so this program plus one additional lab of your choosing will be taught.