what does it feed on?
Their diet consists almost exclusively of euphausiids (krill)
Diet and feeding
he blue whale diet consists almost exclusively of euphausiids (krill) except off Sri Lanka. Blue whales have been observed near Magdalena Bay (along the western coast of Baja California, Mexico) feeding on pelagic red crabs. 
who makes up most of the population of antarctica 5,000 in the summer and much lesser in winter where did it get the name from? It is the romanised version of the Greek compound word "antarktiké" meaning "opposite to the Arctic", "opposite to the north" what kinds of animals can be seen there? Some species of marine animals include penguins, blue whales, orcas, colossal squids and fur seals what sort of weather conditions it has? It is the coldest of Earth's continents. how big is the second marine animal mentioned? A maximum confirmed length of 29.9 meters (98 feet) and weight of 173 tonnes (190 tons), it is the largest animal known to have ever existed. how fast is it while swimming? Blue whales leisurely traveling rates is 4.6 mph. The maximum speed of a blue whale while being chased or harassed has been reported at 20 to 48 km/h
Euphausiids (krill). Krill The blue whale diet consists almost exclusively of euphausiids (krill) except off Sri Lanka.
Blue whale Blue whale Blue whale
Diet and feeding Diet and feeding Diet and feeding
The blue whale diet consists almost exclusively of euphausiids (krill) except off Sri Lanka. The blue whale diet consists almost exclusively of euphausiids (krill) except off Sri Lanka.  The blue whale diet consists almost exclusively of euphausiids (krill) except off Sri Lanka. 
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Blue whale [SEP] Diet and feeding
The blue whale diet consists almost exclusively of euphausiids (krill) except off Sri Lanka. Blue whales have been observed near Magdalena Bay (along the western coast of Baja California, Mexico) feeding on pelagic red crabs. However, this has not been confirmed by recent observations or fecal samples. Other accidental or opportunistic consumption of copepods and amphipods have been documented. Blue whales feed on krill at the surface and at depths greater than 328 ft (100 m), following their prey’s diel vertical migration through the water column. The main prey species of krill targeted by blue whales varies among habitat in the different ocean basins.