Dear Colleagues, I would ask those interested in or practising phocid sedation and anaesthesia to read on. I am currently researching the topic of phocid sedation and anaesthesia in order to produce an updated review and although there is a great deal of information in the published literature, and regular reviews, I believe there are a number of studies that hold information and data that have not been published to date and would greatly add to our current understanding of this subject. There are currently a range of sedation and anaesthetic agents and methods of delivery in use, the diversity of which would be of practical interest to all those engaged in seal capture for research, management and rehabilitation. This study will be done in partial fulfilment of a post-graduate certificate in Conservation Veterinary Medicine at Murdoch University, Australia. Therefore, I would like to offer researchers the opportunity to contribute information or data to a meta-analysis or re-analysis of raw data. Data can be contributed in one of two ways, option one would be a meta-data approach including the species, the number of seals sedated or anaesthetised (including where possible the size, sex and status of the seals), the drugs and dose rates used, the mean and range of levels (or plane) of immobilisation and duration of effect, method of delivery, mortality rate, rate of complications (such as apnea), and the purpose of the immobilisation (e.g. deployment of tracking devices or measurement). Alternatively, and my preferred option, would be to provide a spreadsheet with the capture data including the species, drugs used and purpose of immobilisation, also individuals' sex, size (mass and length), status (e.g. breeding or moulting) of the dose given, induction and recovery times, plane of immobilisation, whether there were complications or death. The data will be held in confidence and only be used for determining the mass specific doses and effects for the range of species available and source of the data will be acknowledged and cited in the text. This data will then be interpreted in terms of current best practice and practicality. In return for the contribution of data I will acknowledge the provision of the data in my thesis/course project and would like to offer co-authorship on any subsequent publication if requested. I look forward to hearing from all those interested. Kind regards, Iain Field Iain C Field, BSc(hons), GradDip(Hons), PhD Marine Mammal Research Group Graduate School of the Environment Macquarie University Sydney, NSW 2109, Australia