commence of spring in iran accompany with the starting of the new "gamary year" .one of good ritual at this time is set a seven object start with "s" in tableclothes.you can see one of them below.

Data from explosive blast studies, while not directly comparable to pile driving, indicate that very fast, high-level acoustic exposures can cause physical damage and/or mortally wound fishes. There is also reason to believe that lesser effects might also occur, but these have not been well documented. Just as in investigations testing the effects of sound, however, the number of species studied in tests of the effects of explosives is very limited, and there have been no investigations to determine whether blasts that do not kill fish have had any impact on short- or long-term hearing loss, or on other aspects of physiology (e.g., cell membrane permeability, metabolic rate, stress), and/or behavior (e.g., feeding or reproductive behavior, movement from preferred home sites).