A little stormy weather at the beach, especially on the West coast (the "left coast" as we refer to it), isn't necessarily a bad thing. You get some relief from 90+ degree days (which we get for five months out of the year), some spectacular sunsets, and...if you're in the right place at the right time...you get a couple of souvenirs to take home.
Most of the sharks teeth you'll find along the eastern portion of the Gulf of Mexico are fingernail-size or smaller from Lemon and Sand sharks. Larger one's like this, more than likely an extinct species of Mako, are fairly rare to find on shore. Generally speaking, the larger the tooth, the harder it is for the currents and wave-action to push it ashore. Diving or snorkeling just off shore can yield some real monsters (literally)...palm-sized and larger teeth from long-extinct species such as the Megalodon.