Dear colleagues, We are currently compiling *unpublished data *on nurturant behaviour in cetacean species for a forthcoming scientific publication and would greatly appreciate your collaboration. The term “nurturant behaviour” was first described by Caldwell and Caldwell (1966) to refer to behaviour involving care or attention towards dead young individuals. If you have relevant records or observations, please provide the following information: § Location (mandatory, if possible with GPS coordinates) § Date of observation (mandatory) § Species (mandatory) § Decomposition stage (if possible). Following the classification by da Cunha Ramos et al. (2024): o Stage I: Animal recently dead, body intact, natural body shape with no signs of bloating, skin smooth and normal in colour, eyes clear. o Stage II: Slight bloating due to gas formation, reddish discolouration on rostrum and flanks, a small amount of bloody fluid may be seen around the mouth, skin mostly intact, minor changes visible. o Stage III: pronounced bloating (especially in the abdominal area), abundant bloody fluid from the mouth or blowhole, strong odour present, some skin slippage or loss (5% - 25%). o Stage IV: Extensive skin loss (25%-50% or more), loss of eyes and teeth, exposure of bones in jaws and limbs, possible evisceration, flattened body shape with collapse of soft tissues, advanced decay and strong odour, skeletal elements visible. § Duration of carrying behaviour observed (if possible) § Whether the carcass was abandoned or removed (if possible) Please send the information by *November 30th*, either: § By email to iolanda.silva@ciimar.up.pt with the subject line: Nurturant Behaviour Data, or § Via the Google Form: https://docs.google.com/forms/d/e/1FAIpQLScSxqUwA3J7JhLGx3h4UmhRJ67WoCb-g_em... In recognition of contributions, one co-authorship will be offered per shared dataset. For larger datasets, additional co-authors may be considered and discussed individually with the contributors. If preferred by the data provider, a Memorandum of Understanding (MoU) may also be established to formalise data sharing and authorship conditions. Thank you very much for your time and valuable contribution to this collaborative effort. Best regards, Iolanda Silva