Fulling et al. (2017). Sperm Whale Ramming from Aquatic Mammals on Vimeo.

Fulling, G. L., Jefferson, T. A., Fertl, D., Vega, J. C. S., Oedekoven, C. S., & Kuczaj II, S. A. (2017). Sperm whale (Physeter macrocephalus) collision with a research vessel: Accidental collision or deliberate ramming? Aquatic Mammals, 43(4), 431-439.