Fin Whale Balaenoptera physalus  What Are They Like?  The fin
whale is the world's second largest animal after the blue whale.
An adult can grow to 62-72 feet (19-22 meters) in length and
weigh about 77 tons (70 metric tons). The fin whale's long,
slender body gradually tapers down towards its tail fins. Its
head is flat on top and V-shaped. The streamlined shape of its
body allows it to swim at speeds of up to 23 miles (37
kilometers) per hour. A prominent dorsal fin measuring 24 inches
(60 centimeters), is located on its lower back. The sides and
backs of fin whales are typically light grey to brownish- black,
and their undersides are paler. On average, the lifespan of a
fin whale is 75 years.  Where Do They Live?  Fin whales inhabit
the open ocean, and are found in tropical, temperate, and sub-
polar waters worldwide.  Did You Know? Fin whales are known to
swim around schools of fish to condense their distribution for
easier consumption.  How Are Babies Made?  Fin whales are often
seen in pairs and are beli