Space Use Ecology is a modeling and visualization tool for estimating patterns of animal space use in >2 dimensions using biotelemetry data. Investigators can upload wildlife tracking datasets directly or via link to the movebank.org repository and customize model input parameters. The app will then derive 2D, 2.5D and 3D movement-based kernel density estimates of space use, bounded by bathymetric and/or topographic layers to more realistically characterize animal spatial behaviors.