Where do chordata live?

Answer 1

To summarize:

Everywhere.

From wikipedia:

"Chordata, are deuterostome animals possessing a notochord, a hollow dorsal nerve cord, pharyngeal slits, an endostyle, and a post-anal tail for at least some period of their life cycles. Taxonomically, the phylum includes the subphyla Vertebrata, including mammals (and thus humans), fish, amphibians, reptiles, birds; Tunicata, including salps and sea squirts; and Cephalochordata, comprising the lancelets."

Answer 2

Chordates are found in a variety of habitats around the world, including terrestrial, marine, and freshwater environments. They can be found in forests, deserts, grasslands, oceans, rivers, and lakes. Chordates have adapted to a wide range of environments and can be found on every continent.