Select a dynamic locator type to add to your ocean or pond. If you want to move the position of the locator interactively, click 
, and then turn on Free Transform in the options window. When on, the locator cannot be connected directly to the expression.
See Add locators.
- Surface
- Surface locators follow the motion of the ocean or pond in the Y direction only.
- Dynamic Boat
- This types of locator follows the motion of the ocean or pond in the Y direction, but additionally rotate in X and Z to allow the boat to pitch and roll in the waves.
- Dynamic Simple
- This type of locator follows the motion of the ocean in the Y direction, but additionally reacts appropriately to dynamic attributes (in the Extra Attributes section of the Attribute Editor).
- Dynamic Surface
- This type of locator adds a NURBS sphere (a buoy) to your ocean, which it bobs up and down in the water. The motion is restricted to the Y direction. See Add a buoy to an ocean.