Movie S2. Z-stack of granuloreticulopodia of Quinqueloculina sp. stained with SiR-actin (red) and Phalloidin Atto 488 (green) fluorescent probes. Note the shift between two fluorescent channels. Arrow indicates the position of the SiR-actin-labelled granule (ALG) stained with both fluorescent probes. The granule is in focus in the z-position 0-640 nm in the SiR-actin fluorescent channel. From the z-position 960 nm it becomes to be out of focus. For the Phalloidin Atto 480 channel the image of the same object is in focus in z-position 640-1280nm. This shift applies to other areas of the image.