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  1. Tunicate - Wikipedia

    Tunicates are marine invertebrates belonging to the subphylum Tunicata (/ ˌtjuːnɪˈkeɪtə / TEW-nih-KAY-tə). This grouping is part of the Chordata, a phylum which includes all animals with dorsal nerve …

  2. Tunicate | Anatomy, Habitat & Adaptations | Britannica

    Tunicates are distributed in ocean waters from the polar regions to the tropics. Free-swimming tunicates are found throughout the oceans as plankton, while sessile forms grow mainly on solid surfaces such …

  3. Tunicate - Examples, Characteristics, Anatomy, and Pictures

    Oct 28, 2025 · Tunicates are marine invertebrates of the subphylum Tunicata characterized by an outer exoskeleton made of tunicin (a type of cellulose). These animals possess dorsal nerve cords and …

  4. Tunicates—Not So Spineless Invertebrates - Smithsonian Ocean

    One of these invertebrate groups—the tunicates—should be of special interest, however, because they are our closest invertebrate relatives. About 3,000 tunicate species are found in salt water habitats …

  5. Tunicates Explained - Features, Facts, and Examples

    Tunicates are marine animals that filter water for food through their barrel-shaped bodies. You can spot them by their two siphons, which are tubes that let water flow in and out.

  6. Tunicate - New World Encyclopedia

    Tunicates (subphylum Urochordata or subphylum Tunicata) are marine, barrel-shaped invertebrates of the phylum Chordata. They are commonly called tunicates because they are covered by a tough …

  7. What's a Tunicate? - UW Departments Web Server

    What's a Tunicate? Tunicates, commonly called sea squirts, are a group of marine animals that spend most of their lives attached to docks, rocks or the undersides of boats. To most people they look like …

  8. Introduction to the Urochordata

    Water is filtered inside the sack-shaped body. However, many tunicates have a larva that is free-swimming and exhibits all chordate characteristics: it has a notochord, a dorsal nerve cord, …

  9. Tunicates: Current Biology - Cell Press

    Feb 22, 2016 · Tunicates, also called urochordates, are an extremely diverse subphylum of the Chordata, a phylum that also contains the vertebrates and cephalochordates.

  10. Tunicates: The Ocean's Hidden Wonders - Simple Science

    Mar 31, 2025 · Tunicates, also known as sea squirts, are fascinating little creatures found in oceans all around the world. They belong to a group called Chordata, which is quite a big name for a family that …