Data from paper **Intraspecific variation in harbour porpoise (** *Phocoena phocoena* **) cochleae and its implications for comparative studies across odontocetes.** > Martins MCI, Park T, Racicot R, Cooper N. 2020. Intraspecific variation in the cochleae of harbour porpoises *Phocoena phocoena* and its implications for comparative studies across odontocetes. PeerJ 8:e8916 https://doi.org/10.7717/peerj.8916 The analyses require the two tidied datasets `odontocete-data-landmarks.csv` and `odontocete-data-linear.csv`. Raw data sources used to build these are `cochlea-measurements.csv`, `curves.csv`, `echo-metadata.csv` and landmark data for each species which is either provided here for all *Phocoena phocoena* specimens, or can be found at https://doi.org/10.5519/0082968 for other odontocetes. If you use this larger dataset of landmarks please cite: > Travis Park, Bastien Mennecart, Loïc Costeur, Camille Grohé, Natalie Cooper (2018). Dataset: Convergent evolution in toothed whale cochleae. Natural History Museum Data Portal (data.nhm.ac.uk). https://doi.org/10.5519/0082968. More details can be found at https://github.com/nhcooper123/intraspecific-porpoise.