California sea lions relaxing at Pier 39, San Francisco, San Francisco Peninsula, California, United States of America, North America

pier 39 san francisco marine life coastal wildlife relaxation wooden platforms harbor cloudy sky north america sea mammals aquatic animals urban wildlife marine habitat bay area animal behavior waterfront leisure time tourist attraction nature observation wildlife sanctuary animal resting ocean environment animal habitat sea life public viewing coastal ecosystems animal tourism marine mammals city skyline boat harbor relaxation spots resting animals marine reserves diverse habitats harbor seals outdoor escapades tourist destinations coastal enjoyment nature watching wildlife enthusiasts local fauna iconic landmarks animal gathering peaceful scenes