Detectability Acoustic behavior 1 Acoustic measuring instruments 1 Biosignatures 1 Broadband signal 1 Direct imaging 1 Earth (planet) 1 Earth-like exoplanets 1 Ecosystems 1 Eubalaena 1 Eubalaena glacialis 1 Exo-planets 1 Extrasolar planets 1 Extraterrestrial intelligence 1 Fluorescence 1 Glass 1 Hand-held spectrometers 1 Heritage science 1 Laser excitation 1 Low-amplitude 1 Non-invasive investigation 1 North Atlantic 1 Passive acoustic monitoring 1 Performance 1 Planets and satellites: detections 1 Planets and satellites: surfaces 1 Portable instrumentation 1 Powders 1 Raman signal 1 Raman spectrometers 1