Blue Whale
The blue whale is one of the rorquals, a family that includes the humpback whale, fin whale, Bryde's whale, sei whale, and minke whale.
The blue whale is the largest mammal, to inhabit the earth. Its body is lengthy, somewhat slender, and streamlined.
• blue whale
• rorquals
• largest mammal
• flume
• give birth and nurse live young.