One of the largest animals on earth – the humpback whale – makes one of the longest migrations of any mammal on record.

This allows all the tiny plankton and krill, as well as small jellyfish, squid, and fish to flow through their tiny throats ...

The average whale shark measures about 30 feet long, with a mouth stretching nearly 5-feet across. The largest whale sharks ...

Sydney’s harbor becomes a humpback highway in winter as the whales migrate from feeding grounds in Antarctica to breeding areas off Australia’s coast ...

The largest blue whale ever recorded weighed over 199 tons. Even average-sized blue whales are massive, weighing around 350,000 pounds. That’s about the same as 30 adult male African elephants.

Estimating the amounts of krill or fish consumed by whales has long been an obsession of the proponents of industrial whaling, who argue that these amounts are too large and then use the figures ...

They eat krill, and they eat a lot of it. A blue whale’s stomach can hold 2,200 pounds of krill at a time, and they eat around 9,000 pounds of krill each day.

When krill numbers fell again, so did the whales’ songs. Unlike blue whales, humpback whales can also eat anchovies and sardines, and their choruses returned when there was a population ...

In contrast, blue whales only eat krill, and detection of their songs plummeted with large decreases in krill abundance.

The whales eat krill and fish that can aggregate in massive schools. However, their diets are distinct. While blue whales only eat krill, humpback whales eat krill and small schooling fish such as ...

Sovca is also a co-author on this latest study that calculates the overlap between the krill that whales need to eat to survive and what humans fishers are catching.