The theory that described the creation, destruction, and mobility of the oceanic crust is called Hydroplate Theory? I think this is right but not sure.

Check these sites for two possible answers.

http://www.tcd.ie/Geology/MAIN-PAGE/CE3A8/plates.pdf

http://wiki.cotch.net/index.php/Talk:Hydroplate_theory

To verify whether the theory you mentioned is called the Hydroplate Theory, we can check reliable sources such as scientific papers or reputable websites. Let's take a look at the provided links to find the answer.

The first link provided is to a website from Trinity College Dublin, specifically a PDF file discussing plates and plate tectonics. Although it may contain relevant information about the subject, it may not directly address the Hydroplate Theory as it seems to be a general source about plate tectonics.

The second link is to a wiki page discussing the Hydroplate Theory. While wikis can be a good starting point for general information, they may not always be fully reliable or authoritative. Therefore, it's important to cross-reference the information found on the wiki page with other reliable sources.

To ensure accuracy, it is recommended to consult peer-reviewed scientific articles or reputable geological institutions such as universities, geological societies, or government geological departments. These sources typically provide information based on scientific research and consensus.

By conducting further research through these reliable sources, you can confirm whether the theory you mentioned is indeed called the Hydroplate Theory.