Sea oats are a protected grass in most states along the East Coast. Recently, Floridian ornithologists discovered that the pygmy burrowing owl makes its nest within sea oat colonies to conceal its young from natural predators such as the frigate. Picking or disturbing sea oats is punishable by fine in Georgia and Florida." - Wikepedia.com
The oats are a crucial component of hurricane defense strategy. The plants below are in "flowering season" on Longboat Key beaches.

