Caption
Blue dragon / Blue seaslug (Glaucus atlanticus) feeding on a Portuguese man o' war (Physalia utriculus) along with a much smaller relative, Glaucilla sp. (upside down); Glaucus and Glaucilla store the venomous nematocysts from their prey Physalia and use them for their own defense; Kona, Hawaii
Availability
Only inBelgium, Canada, France, Luxembourg, Switzerland