Three humpback whales break the surface of Glacier Bay’s pristine waters, exhaling in near-perfect unison and sending towering, misty blows into the crisp, cold air. Each blow marks a deep inhalation, as the whales fill their massive lungs with oxygen before diving again into the rich, nutrient-filled waters below. Their coordinated respiration creates a fleeting, awe-inspiring spectacle, a reminder of both the size and the grace of these ocean giants. As the whales’ backs arch and tails slip beneath the surface, the rhythm of their breathing—blow, dive, and resurfacing—offers a rare window into the life of creatures that can travel thousands of miles each year while sustaining their immense bodies in the vast expanse of the northern Pacific. Photographer: Sean Neilson