Simplify the following text for a Grade 10 native English-speaking person.
Original: Their blue blood 's hemocyanin binds and transports oxygen most efficiently , aided by gills with especially large surface area .
Simplified: Their blue blood 's hemocyanin binds and transports oxygen more efficiently than in other cephalopods ( Seibel et al . 1999 ) , aided by gills with especially large surface area .