ANNEXATION, EXTRATERRITORIAL JURISDICTION, AND EMINENT DOMAIN ON INACCESSIBLE GULF ISLAND.
Tex. LOC. GOV'T Code § 43.902.
in effect(a) Land on an island bordering the Gulf of Mexico that is not accessible by a public road or common carrier ferry facility may not be annexed by a municipality without the consent of the owners of the land.
(b) The extraterritorial jurisdiction of a municipality does not include land on the island unless the owners of the land consent.
(c) A municipality may not take property on the island through eminent domain.