(b) Straps, slings, harnesses, or other such devices used for body support or restraint when transporting marine mammals such as cetaceans or sirenians shall meet the following requirements:

1. (1) The devices shall not prevent attendants from having access to the mammal to administer care during transportation;
2. (2) The devices shall be equipped with sufficient padding to prevent trauma or injury at points of contact with the mammal's body;
3. (3) Slings or harnesses shall allow free movement of flippers outside of the harness or sling;
4. (4) The devices shall be capable of preventing the mammal from thrashing about and causing injury to itself, handlers, or other persons, but shall be designed so as not to cause injury to the mammal.

(c) A primary enclosure used to transport marine mammals shall be large enough to assure the following:

1. (1) A sea otter or polar bear has sufficient space to turn about freely with all four feet on the floor and to sit in an upright position, stand, or lie in a natural position;
2. (2) A pinniped has sufficient space to lie in a natural position;
3. (3) If a sling, harness, or other supporting device is used, there are at least 3 inches (7.5 centimeters) of clearance between any body part and the primary enclosure;