Using trajectories from drifter and float trajectory data, we construct geographies of the Lagrangian circulation in the Gulf of Mexico at the surface and depth, respectively. A Lagrangian geography is composed of weakly communicating basins of attraction for almost-invariant forward attracting sets revealed from a spectral analysis of discrete transfer operators (transition matrices) computed using the trajectory data. We discuss implications of the resulting Lagrangian geographies for connectivity. (Joint work with F. Beron-Vera, M. Olascoaga, G. Froyland, P. P ́erez-Brunius and J. Sheinbaum; support provided by CONACyT–SENER and GoMRI.)