Dear All Last December we informed you about a paper recently published “Methodology for *in situ* gas sampling, transport and laboratory analysis of gases from stranded cetaceans” by Bernaldo de Quirós, Y.; González-Díaz, Ó.; Saavedra, P.; Arbelo, M.; Sierra, E.; Sacchini, S.; Jepson, P.D.; Mazzariol, S.; Di Guardo, G. and Fernández A. Scientific Reports, 1, 193; DOI:10.1038/srep00193 (2011). Article available from: http://www.nature.com/srep/2011/111214/srep00193/full/srep00193.html *On this ocassion we are pleased to announce the step by step protocol publication in nature’s protocol Exchange web page*. This protocol is entitled PROTOCOL FOR GAS SAMPLING AND ANALYSIS IN STRANDED MARINE MAMMALS<http://www.nature.com/protocolexchange/protocols/2299> and can be found at http://dx.doi.org/10.1038/protex.2012.002 The Protocol Exchange is an open resource where the community of scientists pool their experimental know-how to help accelerate research. It enables researchers to more readily reproduce or adapt the methodology described. Protocols Exchange is organised around the concept of Laboratory Groups. All Protocols are associated with a Lab Group and authors cannot share protocols except as members of a Lab Group. We have created an “open” lab Group. It is open under invitations but also upon request. Therefore if you wish to participated, , make comments or suggestions concerning the protocol, you should request to become a member of our lab Group: “Institute of Animal Health, University of Las Palmas de Gran Canaria<http://www.nature.com/protocolexchange/labgroups/636> ”. We hope you find useful this new tool. We look forward for your comments! Regards, Prof. Antonio Fernández PhD Yara Bernaldo de Quirós