They have a closed circulatory system.
never mind i found the answer :D
Cephalopods, such as octopuses and squids, have a closed circulatory system. This system consists of a heart that pumps blood through a series of vessels for efficient distribution of oxygen and nutrients to tissues and organs.
An open circulatory system.
A closed circulatory system
closed circulatory system
Closed Circulatory system
earthworms have a closed circulatory system
earthworms have a closed circulatory system
closed circulatory system.
closed circulatory system.
Closed circulatory system I believe.
They have a closed circulatory system.