The Least Squares estimator does not do a very good job in estimating the true false killer whale movement. It is accurate to a certain extent, in that it estimates the false killer whale to be in the correct area of the Earth.
Fig. 1. Least Squares estimation with truth in red and estimated in pink. Least Squares does not follow the true trajectory, although it does denote that the false killer whale is in the right area of the Earth.