![•Blue Whales are the biggest animals ever
known to man kind. They are even bigger then
the dinosaurs.
BLUE WHALE
•The Blue Whale eats zooplankton[Small
crustaceans]
•The biggest Blue Whale ever to be caught was
a female Blue Whale. It was 29 metres long and
weighed more then 158 tonnes.
•Also, female Blue Whales are bigger then the
males and their blood vessels are so big that
you could swim in it.](https://image.slidesharecdn.com/whales-130314190555-phpapp01/85/Whales-ppt-24-320.jpg)
Whales.ppt
- 1. WHALES
- 2. • What Are They ? Fish ?? Bird ??
- 3. Whales Are : • Whales are large, intelligent, aquatic mammals. They breathe air through blowhole(s) into lungs (unlike fish who breathe using gills). • They are the only mammals, other than manatees (sea cows), that live their entire lives in the water, and the only mammals that have adapted to life in the open oceans.
- 4. Scientific Classification Kingdom: Animalia Phylum: Chordata Class: Mammalia Subclass: Eutheria Order: Cetacea Whale (origin Old English hwæl)
- 5. Evolution Of Whles •Primitive whales evolved during the mid-Eocene period, about 50 million years ago. Fossil remains indicate that whales evolved from hoofed land mammals - perhaps the shore-dwelling, hyena- like Mesonychid that returned, bit by bit, to the sea roughly 50 million years ago. •All cetaceans, including whales, dolphins and porpoises, are descendants of land-living mammals of the Artiodactyl order
- 6. •Cetaceans include the whales, dolphins and porpoises. • There are over 75 species of Cetaceans. • Whales belong to the order Cetacea (from the Greek word "ketos" which means whale) CETACEANS Baleen whales Toothed whales (Mysticeti) (Odontoceti)
- 7. Toothed whales Baleen whales •predators that use their •predators that sieve tiny peg-like teeth to catch fish, crustaceans, small fish, and squid, and marine mammals, other tiny organisms from swallowing them whole. the water with They have one blowhole baleen. Baleen is a comb- (nostril) and like structure that filters the use echolocation to hunt. baleen whales' food from There are about 66 species the water. Baleen whales of toothed whales. are larger than the toothed whales and have 2 blowholes (nostrils). There are 10 species of baleen whales
- 8. Anatomy Like all mammals, whales breathe air, are warm- blooded, nurse their young with milk from mammary glands, and have body hair
- 9. SIZE • The Blue Whale has been the largest animal that ever lived on Earth. • The adult is 28-33 M long (98 ft ) The smallest whale is the dwarf sperm whale which as an adult is only 8.5 feet (2.6 m) long.
- 10. Special Structures Blowhole(s) Features of a blue whale Whales breathe via blowholes; baleen whales have two and toothed whales have one. These are located on the top of the head
- 11. Behavior Sleep A humpback whale breaching. Unlike most animals, whales are conscious breathers. All mammals sleep, but whales cannot afford to become unconscious for long because they may drown. It is thought that only one hemisphere of the whale's brain sleeps at a time, so they rest but are never completely asleep
- 12. Feeding • Whales are generally classed as predators, but their food ranges from microscopic plankton to very large animals. • Toothed whales eat fish and squid which they hunt by use of echolocation. Killer whales sometimes eat other marine mammals, including whales. • Baleen whales such as humpbacks and blues, when feeding in higher latitudes (such as the Southern Ocean), eat mostly krill. They imbibe enormous amounts of seawater which they expel through their baleen plates. The water is then expelled and the krill is retained on the plates and then swallowed. • Whales do not drink seawater but indirectly extract water from their food by metabolizing fat
- 13. SWIMMING AND OTHER WATER ACTIVITIES Breaching: Many whales are very acrobatic, even breaching (jumping) high out of the water and then slapping the water as they come back down. Sometimes they twirl around while breaching. Breaching may be purely for play or may be used to loosen skin parasites or have some social meaning. Logging: Logging is when a whale lies still at the surface of the water, resting, with its tail hanging down. While floating motionless, part of the head, the dorsal fin or parts of the back are exposed at the surface.
- 14. Spyhopping: This is another cetacean activity in which the whale pokes its head out of the water and turns around, perhaps to take a look around. Lobtailing: Some whales stick their tail out of the water into the air, swing it around, and then slap it on the water's surface; this is called lobtailing. It makes a very loud sound. The meaning or purpose of lobtailing is unknown, but may be done as a warning to the rest of the pod of danger.
- 15. REPRODUCTION Cetaceans give birth to live young which are nourished with milk from their mothers - they don't lay eggs. Cetaceans breed seasonally, usually in warm tropical waters, and females usually have one calf every 1-3 years. The gestation times range from 9-18 months. Whale calves can swim at or soon after birth. Mother whales care for their young for an Young cetaceans are frequently mottled in color, camouflaging them extended period of time, usually from predators. Newborns have a at least a year, feeding them sparse covering of hair which they milk and protecting them. lose as adults.
- 17. MIGRATION • Many ceteaceans, especially baleen whales, migrate over very long distances each year. They travel, sometimes in groups (pods), from cold-water feeding grounds to warm-water breeding grounds. •Gray whales make the longest seasonal migration of any of the whales. They travel about 12,500 miles each year.
- 18. WHALES SONGS Complex whales songs can be heard for miles under the water. • The humpback's song can last for 30 minutes. • Baleen whales sing low-frequency songs; toothed whales emit whistles and clicks that they use for echolocation • The songs are thought to be used in attracting mates, to keep track of offspring, and for the toothed whales, to locate prey.
- 20. WHALES OF THE WORLD
- 21. Amazing Whales ….. • BELUGA WHALE .
- 22. • The beluga or white whale or sea canary ,Beluga means "white one" in Russian , Its genus, Delphinapterus, means "whale without fins" • They have one blowhole • They blow air bubbles …. Just for fun • their unusual color makes them one of the most familiar and easily • They are social animals
- 23. HUMPBACK WHALES GENTLE GIANTS OF THE SEA
- 24. •Blue Whales are the biggest animals ever known to man kind. They are even bigger then the dinosaurs. BLUE WHALE •The Blue Whale eats zooplankton[Small crustaceans] •The biggest Blue Whale ever to be caught was a female Blue Whale. It was 29 metres long and weighed more then 158 tonnes. •Also, female Blue Whales are bigger then the males and their blood vessels are so big that you could swim in it.
- 25. SPERM WHALE
- 26. WHALES VS HUMAN HUMAN IS THE MAIN PREDATOR FOR THE WHALES
- 27. Uses of whale oil Soap, shampoo, detergent, cooking fat, lipstick, margarine, ice cream, crayons, paint, polish, lino, lubricants & dynamite Uses of baleen riding crops, shoehorns, umbrella ribs, brushes, watch springs, shop shutters, fishing rods, fans, corsets and crinolines
- 28. Uses of whale tissues Skin: bootlaces, bike saddles, handbags, shoes. Tendons: tennis racquets, surgical thread. Blood: sausages, fertilizer. Connective tissue: jelly, sweets & photo film Uses of whale meat fertilizer, dog food, animal feed. Only eaten in Iceland, Norway, Korea and Japan
- 29. SAVE THE WHALES
- 30. WHALING
- 34. REFERENCES • Carwardine, M. (2000). Whales, Dolphins and Porpoises. Dorling Kindersley. ISBN 0751327816.. • Williams, Heathcote (1988). Whale Nation. New York: Harmony Books. ISBN 0517569329.. • http://www.enchantedlearning.com/subj ects/whales/allabout/
- 35. BY: Salma Mohamed Abdelkhalek Al-anwar 3rd year Biotechnology Faculty Of Science Zoology Dept. – Benha University Under the supervision of : Dr / Hany A. Abdel-Salam
- 36. THANKS A LOT ^_^