they have an open circulatoyr system and its fluid is called haemolymph.
The circulatory system and the cardiovascular system. :D NOT jk
Some do some don't! :D
The lungs, the circulatory system, and the brain :D
never mind i found the answer :D
the heart, the lungs, and the blood vessels ;D
neither! Dolphins are zombies of course :D
lymph node and plasma :D
D. Kin has written: 'V. I. Lenin on the soviets' -- subject(s): Soviet
skeletal
open circulatory system ;D
crab
High Blood Pressure( keyword blood lol) It effects circulatory system(Blood). :D