Rumor has it that the penalty ranges from a slap on the wrist to a ticket for a few hundred baht. Thankfully the exchange rate is favorable and this is around $10 US.
Officers of the Bangkok Metropolitan Authority (BMA) frequently enforce this aspect of the public littering law. The fine is up to 2000 Baht.
14-12.10. Holding meetings or demonstrations while wearing masks, hoods, etc. No person or persons at least 16 years of age shall while wearing a mask, hood or device whereby the person, face or voice is disguised so as to conceal the identity of the wearer, hold any manner of meeting, or make any demonstration upon…
The head of said whale, however, belongs to the King. This law dates back to 1307. The original law read something along the lines of “The King shall have throughout the realm, whales and great sturgeons taken in the sea or elsewhere within the realm, except in certain places privileged by the King.”