The blue, orange, and red sea angel boasts two subspecies with the northern variation living in colder water and maturing at 1.2 inches and reaching a size of 2.8 to 3.3 in.

To grasp how our input of CO2 feeds back upon polar foods webs we can use the unassuming pteropod mollusk, commonly called the sea angel because of its modified wing-like (ptero-) I wrote a piece on ...