Wikipedia
Sargassum pipefish
Sargassum pipefish (Syngnathus pelagicus) is a species of pipefishes, which found in the western Atlantic: Maine (United States), Bermuda, northern Gulf of Mexico to Argentina, Nova Scotia, Antilles, western Caribbean Sea from Yucatan to Colombia. Marine subtropical species, up to 18.1 cm maximal length. Habits growth of Sargassum algae.