Whales and Whalewatching on the Northeast Coast Tomorrow morning, we go in search of...

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Presentation transcript:

Whales and Whalewatching on the Northeast Coast

Tomorrow morning, we go in search of...

Whales !

Where Did They Come From?

Evolution of Whales 1.Diacodexis-primitive terrestrial hooved animal 2.Pakicetus-terrestrial cetacean 3.Ambulocetus-amphibious cetacean 4.Dorudon-fully aquatic early cetacean; note elbow and hindlimbs 5.Balaena-recent whale

Whale Family Tree

Anatomy... everything is Whale-sized!

Dorsal Fin Flukes Pectoral Fin/Flipper Ventral Grooves BaleenEye Blowhole/nostril Caudal peduncle

How Whales Feed

Finding Food by Echolocation

Scrimshaw

Filter Feeding With Baleen

Filter Feeding Diatoms Copepods

Even Fish and Squid Sand Lance

Bubble feeding

Open Mouth

Longevity: How Long Does A Whale Live? 16 Year Old Harbor Porpoise Tooth

Whale Lice

Migration

Whaling

Subsistence Whaling

Modern Threats: Entanglement

Overfishing

Military Applications

Baleen Whales

Blue Whales

Humpbacks

Minke

Fin Whales

Toothed Whales

Orca

Atlantic White-sided Dolphins

How to tell them apart... clues for identification Dorsal fin shape Fluke shape Blow pattern

Dorsal Fins

Flukes Humpback Right

Blows

Photoidentification

Humback Flukes

Let’s Go Whaling…2003 Style!

Stellwagon Bank

A Footprint!

Behaviors

Flipper Slapping

Fish & Other Marine Life

Sea Birds

“Uh-oh. Howard. Across the street—whalewatchers.”

Repeat after me... Calm seas... No rain... Lots of whales!

Humpbacks