Post by dividavi on Sept 2, 2022 22:10:33 GMT
(from wikipedia)Tunicates are are marine filter feeders with a water-filled, sac-like body structure and two tubular openings, known as siphons, through which they draw in and expel water. During their respiration and feeding, they take in water through the incurrent (or inhalant) siphon and expel the filtered water through the excurrent (or exhalant) siphon. Most adult tunicates are sessile, immobile and permanently attached to rocks or other hard surfaces on the ocean floor; others, such as salps, larvaceans, doliolids and pyrosomes, swim in the pelagic zone of the sea as adults.
Various species of the subphylum tunicata are commonly known as ascidians, sea squirts, tunicates, sea pork, sea livers, or sea tulips.
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So you're wondering how that makes Tunicates our long-lost cousins. The answer is that they don't have the necessary requirements to be vertebrates (while adults), they have a spinal cord of sorts while larva. Humans are Chordates, fish are chordates, and tunicates are Chordates, to be precise. Say hello to our distant relatives.
Various species of the subphylum tunicata are commonly known as ascidians, sea squirts, tunicates, sea pork, sea livers, or sea tulips.
=========================================================
So you're wondering how that makes Tunicates our long-lost cousins. The answer is that they don't have the necessary requirements to be vertebrates (while adults), they have a spinal cord of sorts while larva. Humans are Chordates, fish are chordates, and tunicates are Chordates, to be precise. Say hello to our distant relatives.