50 CFR 14.132 - Food and water.
A marine mammal shall not be transported for more than a period of 36 hours without being offered suitable food unless the shipper's written instructions or the shipper's attendant travelling with the mammal direct otherwise. After feeding, a marine mammal shall be rested for 6 hours prior to resuming transport.
Title 50 published on 2014-10-01
no entries appear in the Federal Register after this date.