The Blue Whale is the largest animal ever known to have lived on Earth, reaching lengths over 100 feet and weights over 200 tons. Despite its enormous size, it feeds almost exclusively on tiny crustaceans called krill, gulping up to 40 million krill per day during peak feeding season. Its heart is the size of a small car, and its low-frequency vocalizations can travel thousands of miles through ocean basins.
Best time to see a Blue Whale
The best time to see a Blue Whale is June–August, when about 61% of U.S. sightings happen, based on 424 research-grade iNaturalist observations.
Not certain it is a Blue Whale? What animal is this? walks through what to check first and the lookalikes that catch people out.
Recent Blue Whale sightings near you
Live, research-grade observations from iNaturalist. Allow location to center the map on you.
Spotted a Blue Whale?
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