Code of Federal Regulations Title 50. Wildlife and Fisheries § 50.14.131 Primary enclosures

(a) A primary enclosure that is not open on top shall have air inlets situated at heights that provide cross ventilation at all levels and that are located on all four sides of the enclosure. Such ventilation openings shall comprise not less than 20 percent of the total surface area of each side of the enclosure.

(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:

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

(d) A marine mammal may be restricted in its movements according to professionally accepted standards of care when freedom of movement would constitute a danger to the animal or to handlers or other persons.

(e) All marine mammals contained in a given primary enclosure shall be of the same species and be maintained in compatible groups. A marine mammal that has not reached puberty shall not be transported in the same primary enclosure with an adult marine mammal other than its mother. Socially dependent animals (e.g., siblings, mother, and offspring) transported in the same conveyance shall be allowed visual and, when appropriate for the species, olfactory contact. A female marine mammal shall not be transported in the same primary enclosure with any mature male marine mammal.