I remember watching a documentary (a well mix of biology and whaling practices) around 3 years ago but there was a scene that showed when whalers targeted a whale (probably a right whale, or a beluga, again not sure), the whale would get very stressed and hit its own head full speed which would often lead to fractures.

I have exhausted my options searching in the internet for this fact, and cannot even narrow down the documentary. I would really appreciate if someone could verify this or narrow down any information regarding this, or am I just in a strong Mandela effect.