Sorry, I should have stipulated "proper handling" in reference from the diver-wholesale facility. Prolonged air exposure of 10min+ could cause irreversible damage internally, same with sea urchins and other invertebrates, but the main concern is their low tolerance to changes in salinity, temperature, and pH. I've never hesitated exposing them to air during the couple seconds it takes to transfer them; however, that does not mean that they will not succumb in the coming months because of starvation.
Many species, as I am sure you are aware, have varied color morphs depending on region. Blue Linckias are very popular if not the most popular, but ime the red variant receives better handling because it is not as readily available. Other colorations also exist and seemingly have better outlooks...just some observations