In the early 20th century, blue whale has been hunting almost to extinction until the mid 1990s, 1960 it to protect this type of whale and soon about whether the rest of the blue whale in the southern hemisphere is about 2300.
During the 20th century, blue whales were hunted nearly to extinction. Until the mid-1960s, has begun to protect whale species and recently estimated that the blue whales in the Southern Hemisphere is about 2,300.
in the last century 20 blue whales were hunted to nearly extinct until the middle decades 1960 has began to protect the whales of this type and quickly. This estimated that left the blue whale in the southern hemisphere, is about 2 300.