Sean Crane / Northern Elephant Seal (Mirounga angustirostris) male calling in territoral display with breath visible, San Simeon, California

JIM CLARE / Peruvian band-tailed gull, (Larus belcheri) chicks. Punta San Juan, (Reserva Nacional de Islas, Islotes y Puntas Guaneras) Peru.

JIM CLARE / Peruvian band-tailed gull, (Larus belcheri) chicks. Punta San Juan, (Reserva Nacional de Islas, Islotes y Puntas Guaneras) Peru.

Jaymi Heimbuch / Northern Elephant Seal (Mirounga angustirostris) male calling, Piedras Blancas, San Simeon, California

Jaymi Heimbuch / Northern Elephant Seal (Mirounga angustirostris) males fighting, Piedras Blancas, San Simeon, California

Doug Perrine / Western gull (Larus occidentalis) adult perched portrait, Piedras Blancas, near San Simeon, California, USA June

Cyril Ruoso / Band-tailed gull (Larus belcheri) defending nest against Humboldt penguin (Spheniscus humboldti) Punta San Juan, Peru

Cyril Ruoso / Band-tailed gull (Larus belcheri) pair mating on beach, Punta San Juan, Peru

Cyril Ruoso / Band-tailed gull (Larus belcheri) pair mating on beach, Punta San Juan, Peru

Winfried Wisniewski / Northern Elephant Seal (Mirounga angustirostris) young bulls sparring on beach, San Simeon, California

Winfried Wisniewski / Northern Elephant Seal (Mirounga angustirostris) young bulls sparring on beach, San Simeon, California

Winfried Wisniewski / Northern Elephant Seal (Mirounga angustirostris) bull calling, San Simeon, California