3D and 2D fluorescence projections. Pictorial representation of the 3D and 2D projections of multiple fluorescence from a marine sponge, Chondrilla nucula. The specimen has been loaded with Alexa 488 fluorescent molecules specific aminobutirric acid (GABA) emitting in green, DAPI for nuclear DNA for the blu component. Red signals are due to the autofluorescence from symbiontic bacteria contamination. Imaging has been perfomed using a Chameleon XR ultrafast Ti-Sapphire laser (Coherent Inc., USA) coupled at LAMBS-MicroScoBio with a Spectral Confocal Laser Scanning Microscope, Leica SP2-AOBS. (Sample availability and preparation, courtesy of Renata Manconi, University of Sassari, Roberto Pronzato and Lorenzo Gallus, University of Genoa).