1. Lund Laser Centre, Department of Physics, Lund, SwedenbLund University, Centre for Animal Movement, Department of Biology, Lund, SwedencStellenbosch University, Laser Research Institute, Department of Physics, Matieland, Stellenbosch, South AfricadFaunaPhotonics IVS, Copenhagen, Denmark
2. Stellenbosch University, Laser Research Institute, Department of Physics, Matieland, Stellenbosch, South Africa