It is easy to find Tecolutla
Tecolutla is a small town about 85km south of Laguna de Tamiahua, which is formed by that prominent bit of land jutting out into the Gulf of Mexico. The lagoon averages about 2-3m deep and is approximately 85km in length. Its big. So, when you are looking at a map of the Gulf, simply find that prominence and move down just a little.
Nearby is the small island of Isla Lobos. Surrounded by a reef system, this island is a popular diving destination.
Its beautiful both by land and by sea as you can see in the following videos.