Sec. 781. Taking or catching, in waters of Gulf or Straits of Florida, commercial sponges of less than prescribed size, and landing or possession of same. 782. Sponges of less than prescribed size; possession prima facie evidence. 783. Punishment for violations of law; liability of vessels. 784. Jurisdiction of prosecutions. 785. Enforcement of law prohibiting taking of sponges of specified sizes; employment of Coast Guard vessels and Customs Service employees.