Yes they are real. Commonly called sea-squirts, they belong to the subphylum Urochordata and have a notochord (a primitive backbone) only in the larval stages. They lose their notochords as adults, and then develop into something that looks like a Gelatin sac.
Tunicates are part of the phylum Chordata, and there are as many of 2,150 species of them. Sea stars, flatworms, and snails are some of the predators of tunicates.
the hawsbill and leatherback sea turtle eats tunicates
chordates
No. They are both chordates, which means during embryonic development they have a notochord, the same as vertebrates. This does not persist in tunicates, but it does in lancelets (adults still have a notochord). Neither tunicates or lancelets have a backbone.
The scientific name for tunicates is Phylum Chordata, Subphylum Tunicata.
emmilee
Because they have no back bone
Tunicates are invertebrates.
Tunicates and lancelets
Tunicates and lancelets represent the two groups of jawless fish. All other species of jawless fish have gone extinct.
Cephalochordates e.g. Amphioxus ,; tunicates , acorn worms etc. are nonvertebrate chordates , they are collctively called protochordates .
Sea squirts are more scientifically known as tunicates. The larval form of most tunicates is free-swimming and resembles a tadpole.