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Orcas are BIG! They are the largest species of dolphins, exceeding 20ft. in length.

Photo Credit: EvaPhoto Credit: Eva KrocherKrocher

Orcas’ formidable teeth and powerful jaws make them a ferocious predator.

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Photo Credit: The Children’s Museum of IndianapolisPhoto Credit: The Children’s Museum of Indianapolis

Orcas are built for life in the sea. They have the ability to focus sound waves in their melon and sense the returning sound waves through their lower jaw to “see” what’s around them. They also have counter-shaded coloration, meaning that they appear white from below to blend in with the sunlight coming down from above, and vice versa.

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Photo Credit: Kelly Balomb-Bartok, Center for Whale ResearchPhoto Credit: Kelly Balomb-Bartok, Center for Whale Research

Interview with Anna Goldman

• [Stuff to include: metabolic rates, heat retention, nitrogen, bones/basic anatomy]

Dolphins are the acrobats of the sea. Their streamlined fusiform body allows them to exceed 20 miles per hour and to leap, spin, and engage in other gymnastic feats.

Photo Credit: Allen McCloudPhoto Credit: Allen McCloud

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Dolphins have an extraordinary ability to survive wounds and injuries of the magnitude that would kill a human. They are able to cut off blood flow to parts of their body in order to stem blood loss, and they have a strong resistance to infection.

Photo Credit: Allen McCloudPhoto Credit: Allen McCloud

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Dolphins sleep very differently than you do. While half of their brain rests, the other stays awake, watching for predators or other threats.

Photo Credit: Kristen EllsbyPhoto Credit: Kristen Ellsby

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Interview with Anna Goldman

• [Stuff to include: metabolic rates, heat retention, nitrogen, bones/basic anatomy]