A live biological specimen is imaged by generating a plurality of light sheets； directing the plurality of light sheets along an illumination axis through the biological specimen such that the light sheets spatially and temporally overlap within the biological specimen along an image plane, and optically interact with the biological specimen within the image plane； and recording, at each of a plurality of views, images of the fluorescence emitted along a detection axis from the biological specimen due to the optical interaction between the light sheets and the biological specimen. The temporal overlap is within a time shift that is less than a resolution time that corresponds to a spatial resolution limit of the microscope.
