horseshoe crabs (and i don't think these are close relationship to octopods) also have lovely blue blood, with copper, not Iron as the oxygen carrying compound.

horseshoe crabs are very old (ie, they haven't changed much or evolved) and are found up and down the US east coast, as far south as the carolinas and as far north as southern maine.

they live in the sea, but lay their eggs above the high water mark (in June, with the equinox)

I was a NYC vollunteer helping Woods Hole researchers doing a study on the poputlation, and helped catch them one day some years ago. there blood is used to create a stain/dye that is used to test for gram negitive bacteria (nasty things gram negitive bacteria, TB is one)


my other obsession