Large walrus herd resting on Alaskan shore

Sounds from a large herd of walruses resting on Alaskan shores of the Chukchi Sea recorded. Deep full barks and calls of individual walruses near the edge of the herd are audible over a continuous rhythmic humming sound that arises from the calls of tens of thousands of walrsues from deeper within the herd. Waves can be heard as they crash onto shore and slides up the beach before retreating. The recording was captured using an audio logger placed within 50 meters (164 feet) of the walrus herd.