Hi Ubiquity,ubiquity;89056 said:involuntary? you really think so?...what's leading you to this conclusion?
Not a conclusion, but a question. There's another cranch squid, Cranchia scabra, that's been documented assuming the spherical configuration when threatened (a collected juvenile in an aquarium): Tolweb has the goods here. Involuntary was the wrong word for me to use, secondary may be more like it, in that the primary defensive response might be ballooning, and the secondary response the release of ink...which, because the squid has become a tight ball, has no outlet. Again, this isn't a conclusion, but I wonder if the self-inking-while-ballooned behavior might represent the occasional pile-up of defensive responses that, while doing no harm, isn't directly beneficial.