Tunicates
From coraldigest
Tunicates
Comparison of Tunicates and Vertebrates
Both share a notochord, dorsal hollow, and a nerve cord. These characteristics are only seen in embryonic development of tunicates. Since tunicates are sedentary they lose some parts of their skeletal anatomy. This allows them to attach to their chosen spot, this will ten lead them to grow the necessary structures to live an adult life. [1]