Animalia: Chordata: Ascidiacea: Stolidobranchia: Pyuridae: Halocynthia: Halocynthia pyriformis (Linnaeus)

Sea peaches are part of the class of invertebrates Ascidiacea – known as sea squirts or tunicates. They are more closely related to chordates (animals with a back bone) than other invertebrates because at some point in their life stage they exhibit vertebrate characteristics such as a dorsal hollow nerve cord, a notochord, a post-anal tail, and pharyngeal slits. However they never develop a bony backbone. Continue reading “81/150: This species is just peachy!” →