WHALES

Welcome to the wonderful world of whales. Here you will learn about the different types of whales, their migration, size and much, much more. So put your seatbelts on because you're about to go on a wild whale rollercoaster.

There are many different types of whales but not all of them go to Antarctica so I will tell you about the ones that do.

Humpback Whale Killer Whale Blue Whale Sperm Whale Fin Whale
Southern Right Whale Sei Whale Minke Whale


HUMPBACK WHALE
Megaptera novaeangliae

external image humpback_whale_sfw.jpg
Length: 15-18m


Weight:
40 tonnes

Life span: 50 years

Birth length: 4 - 5m

Birth weight: 2000kg

Population: 30 000 - 40 000

Classification: Baleen


http://www.lifeinthefastlane.ca/wp-content/uploads/2007/09/humpback_whale_sfw.jpg


Description


The most obvious thing about this whale is the hump on its back this is a fairly large clue as to how this whale got its name. It also has darkly coloured skin and is also recognised for its wonderful under water singing. Not only is this whale beautiful but it's also very clever with its unique hunting technique it manages to hunt for food in a very extraordinary way.


Migration

Humpback whales (like many other whales) make very long journeys for their migration from the tropics down to the cold waters of Antarctica. In winter they make their way to the tropics to mate and calve and in summer they go all the way down to Antarctica to feed.

They travel at the pace of 4 - 14 kph.


Diet


Humpback whales (like all baleen whales) are carnivores. They eat krill, plankton and small fish. Humpback whales have a very interesting way of hunting and it is much too complex for me to explain so i am going to let this video do all the talking.























Blue Whale
Balaenoptera musculus

external image BlueWhaleB008.jpgLength:
27m


Weight: 109 tonnes

Life span: 90 years

Birth length: 6-7m

Birth weight: 3.3 tonnes

Population: 12,000


Classification: Baleen


http://www.freewebs.com/cetaceanrc/BlueWhale1.jpg

Description

The Blue whale is a very large mammal,the largest in the whole world! Not only is this whale big but it is also very, very loud! Like the Humpback whale this whale also has a fairly obvious conclusion about how it got its name, it's BLUE!!!

Migration

Blue whales (like many other whales) make very long journeys for their migration from the tropics down to the cold waters of Antarctica. In winter they make their way to the tropics to mate and calve and in summer they go all the way down to Antarctica to feed.

Blue whalesare very fast swimmers they can travel at a pace of 5 - 48 kph.


Diet


Blue whales (like all baleen whales) are carnivores. They eat krill, plankton and small fish. The Blue whale (like many other whales) has a very interesting hunting technique. First the blue whale will take a large mouthful of water then they will force water out of their spout using their tongue. This leaves thousands of pieces of krill left in their mouths.























Killer Whales
Orcinus orca
external image killer-whale.jpg

Length: 9.8m

Weight:
11.1 tonnes

Life span:
35-50 years

Birth length:
2 - 2.5m

Birth weight:
180kg

Population:
100,000


Classification: toothed whale



http://www.maniacworld.com/killer-whale.jpg

Description

The Killer whale or orca is a toothed whale that is at the top of the food chain, it even eats other whales! The only major threat to this whale is humans. It may not be the biggest whale but it's definitely the most dangerous. The Killer whale is dark in colour, it has big white spots on its back and has a large dorsal fin. Believe it or not the Killer whale belongs to the dolphin family!


Migration

Killer whales are found in all waters at any time unlike most other whales who follow a seasonal route. Instead of following climate and seasons the killer whale follows their food.

Diet

Killer whales eat many different things some of them include fish, squids, seals, sea lions, walruses, birds, sea turtles, penguins . And very rarely polar bears and reptiles,once a killer whale even ate a moose! Somtimes killer whales eat other whales and somtimes they even eat other killer whales.


Minke Whale

Balaenoptera acutorostrata

external image minke%20breach%20copy.jpgLength:
8 - 10.2

Weight: 6 - 15 tonnes

Life span: 30 - 50 years

Birth length: 2.4 - 2.8m

Birth weight: 400kg

Population: 500 000

Classification: Baleen




http://www.7seas-whalewatch.com/usercontent/image/minke%20breach%20copy.jpg

Description
The Minke whale is the smallest baleen whale only weighing 15 tonnes (which isn't very much compared to other whales)! Minke whales are dark in colour, they also have a thick white band around their flippers. Like all baleen whales they have two blowholes on the top of their heads.

Migration

Like most other whales Minke whales migrate to the tropics during winter to breed and then to Polar regions to feed.


Diet


Minke whales (like all baleen whales) are carnivores. They eat krill, plankton and fish. Like all baleen whales the Minke whale has Baleen plates which separate the food from the water. First they take a mouthful of water they then push the water out of their spout. This leaves thousands of pieces of krill.



















Southern Right Whale
Eubalaena australis
external image pic02.jpg
Length: 18.3m

Weight: 80 tonnes

Life span: about 60 years

Birth length: 4 - 6m

Birth weight: 1 - 1.5

Population: 7,500 - 8,000

Classification: Baleen







http://www.navy.mil.za/archive/0810/081023_whales/pic02.jpg


Description

Southern Right whales are Baleen whales, they are the fourth largest baleen whale. They are about the size of a large bus. They may not be the most beautiful whale and may look like they do nothing but they are actually great acrobats.

Migration


In the winter and Spring the Southern Whales make their way to South Africa to mate and calve. Then in Summer they make their way down to the cold waters of Antarctica to feed.

Diet

Southern Right Whales like all Baleen whales are carnivores. They feed on krill, plankton and small fish. Like all baleen whales the Minke whale has Baleen plates which separate the food from the water. First they take a mouthful of water they then push the water out of their spout. This leaves thousands of pieces of krill.



Sei Whale
Balaenoptera borealis
external image sei1.jpg
Length:
17 - 20m

Weight: 33 tonnes


Life span: 60 years

Birth length: 4.5m


Birth weight: 650 - 800kg

Population: 80 000

Classification: Baleen


http://www.biosphere-expeditions.org/images/stories/azores/sei1.jpg


Description

Sei whales are baleen whales, they are the third largest baleen whale. The Sei whale and the Brydes whale look very much alike. They are both thin and streamlined. they are also both dark in colour and both have a white under belly.


Migration

The Sei whale migrates using a seasonal route. They travel to the tropics in winter to calve and in summer they make their way down to Antarctica to feed.


Diet

The Sei whale (like all baleen whales) are carnivores. They feed on krill, plankton, small fish, squid and copepods. Like all baleen whales the Sei whale has Baleen plates which separate the food from the water. First they take a mouthful of water they then use their tongue to push the water out of their spout . This leaves thousands of pieces of krill behind.


Sperm Whale
Physeter macrocephalus

external image 080625-sperm-whales-hmed-915a-h2.jpg
Length:
18m.

Weight: 63 tonnes

Life span:60-70 years

Birth length: 3.5 - 4.5m


Birth weight: 500 - 800kg

population: 1 million

Classification: toothed whale


http://iamyouasheisme.files.wordpress.com/2009/11/080625-sperm-whales-hmed-915a-h2.jpg

Description

Sperm whales are toothed whales, they are in fact, the largest toothed whale there is. Their brain alone can weigh up to 9 kg! they have the largest brain of all kinds of animals. They have one large blowhole on their head and they travel in groups called pods.

Migration

The sperm whales migrate differently to many other whales. The females and calves tend to stay in tropical and sub-tropical areas while the males tend to roam around the polar regions in summer to feed they then return to the females in winter for breeding season.


Diet


Sperm whales (like all toothed whales) are carnivores. They feed on giant squid, fish and octopus. On the off coasts of Indonesia three sperm whales were found attaking a rare megamoath shark! Did you know that a sperm whale eats one ton of food a day!!!


Fin Whale

Balaenoptera physalus
Fin Whale
Fin Whale

Length: 25m

Weight: 50 - 130 tonnes

Life span:90 years

Birth length:6-6.5m

Birth weight:2000kg

Population: 85 000

Classification: Baleen


http://ecolocalizer.com/2007/12/21/australia-combats-japanese-whaling/


Description

The fin whale is a baleen whale, it is the second largest baleen whale.The fin whale is long and thin. It has a grey back and a white under belly. The Fin whale has a small dorsal fin that is located far back on its body.

Migration

Like most other whales the fin whale migrates using a seasonal route. In winter they are located in sub tropical areas to calve. They then make their way down to Antarctica to feed.


Diet

Minke whales (like all baleen whales) are carnivores. They eat krill, plankton and fish. Like all baleen whales the Minke whale has Baleen plates which separate the food from the water. First they take a mouthful of water they then push the water out of their spout. This leaves thousands of pieces of krill.

Interesting Pictures

Blue Whale size comparison

external image Sizecomparisons.GIF

http://www.enchantedlearning.com/subjects/whales/species/Bluewhale.shtml



Whale migration
Blue whale Distribution Map
Blue whale Distribution Map

http://www.whales.org.au/discover/blue/blued.html


Bibliography

  • Whales American Cetacean Society 15/07/10
http://www.acsonline.org/factpack.htm

  • Whales Enchanted Learning 15/07/10
http://www.enchantedlearning.com/subjects/whales/specie.shtml

  • Whale migration Whale Route 15/07/10
http://www.whaleroute.com/migrate/

  • Whales Wikipedia 15/07/10
http://en.wikipedia.org/wiki/Blue_whale

  • Whales National Geographic 15/07/10
http://animals.nationalgeographic.com/animals/mammals.html

  • Whales Australian Fuana 15/07/10
http://www.australianfauna.com/bluewhale.php