Dear colleagues, As part of my PhD research, I need to develop allometric equations for body length of some beaked whale species. I would be very grateful to get in contact with any *Marine Mammal Stranding organizations* who have collected, or may collect, such data and are willing to share it. Body length and weight are two parameters that influence the behavioural ecology of whales, by affecting their oxygen stores, metabolic rates, locomotor costs and their interaction with prey amongst others. Therefore their estimation in the field is crucial for understanding their behaviour. My aim is to*jointly *create *allometric equations* for several species of beaked whales in order to*estimate body length and weight *of free ranging animals in the field using photogrammetry. Species of primary interest are /Mesoplodon densirostris/, /Ziphius cavirostris, Hyperoodon ampullatus/ and/Berardius bairdii/ although I would be happy to expand to other species if sufficient data are available. Please contact me by email at lmml2@st-andrews.ac.uk Thank you in advance for any collaborations. Kind regards Lucia Martin -- Lucía Martina Martín López, PhD student Sea Mammal Research Unit Scottish Oceans Institute University of St Andrews KY16 8LB, Fife Scotland, UK lmml2@st-andrews.ac.uk