Created by: Robbie Davidson

20090906

HUMPBACK WHALE FACTS


Average Length: (Adult) 35-50 ft (Newborn) 13-16 ft
Average Weight: (Adult) 23-30 tons (Birth) 1-2 tons
Population: 18,000-20,000 (2002 figure)
Lifespan: estimated to be around 40 years (1998 figure)
Threats: Caught in fishing nets, human disturbance, and being tangled in marine pollution
The flukes (tails) have a distinct pattern on the underside, much like our fingerprints
The humpback whale breaches more frequently than other baleen whales
The Pacific humpback's pectoral fins are white underneath & black on top..
The Atlantic humpback's pectoral fins are white on both sides- which makes it easier for us to see them
While in their breeding grounds- the whales do NOT eat!
Some humpbacks feed in the Southern Ocean and go north to their reproductive areas!
Can stay underwater for 30 minutes but often dives for much shorter periods of time, usually 5 to 10 minutes
Humpbacks emit high frequency "clicks" reaching 30,000 Hz
The males produce, in frequencies between 20 and 9,000 Hz, songs that are the longest and the most varied in all the animal kingdom, with repeated sequences about 15 minutes long
When they are in cold waters, the humpback whale eats 2 tons of fish and planktonic crustaceans a day, in 2 to 4 meals.

4 comments:

Tom said...

That is as big as my house.

david said...

I saw a picture of a whale on the beach. It was huge.

john said...

they are so big

jack said...

humpback is a funny word.