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Page Facing Up

Theme B - Form & Function

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Direct Hit

Theme A - Unity & diversity

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Pill

Theme C - Interaction &  Interdependence

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Keycap Digit One

Theme D - Continuity & Change

Hey there future marine biologist! 🌊 Get ready to plunge into the world of marine mammals and discover the incredible adaptations they&#39;ve made over 50 million years. That&#39;s right, their ancestors once lived on land!

<ul>
	<li>🌍 Original habitat: Terrestrial (on land)</li>
	<li>⏰ Evolutionary shift: About 50 million years ago</li>
	<li>🌊 New home: In the dense and viscous waters</li>
</ul>

Fun Fact: Water is roughly 1,000 times denser than air. Imagine trying to dance in honey instead of air - that&#39;s how challenging swimming could have been for these creatures!

Being streamlined means being shaped to cut through water with the least resistance, like a torpedo!

<ul>
	<li>
	Body Design: Widest at the front, tapering towards the back. 🐟 This shape means less drag.
	</li>
	<li>
	Cool Features

	<ul>
		<li>Flippers, flukes, and dorsal fin: These have a long teardrop profile, which further reduces drag.</li>
		<li>Smooth surface: Blubber is evenly spread with no hind limbs or ear flaps in sight. Plus, most of them ditched their hair! No hairy situations here, just less friction. 💁&zwj;♂️</li>
	</ul>
	</li>
</ul>

How do marine mammals strut their stuff in the ocean?

<ul>
	<li>
	Flippers: Think of these as the marine equivalent of steering wheels! 🚗 Originally front legs, these have evolved for steering in water.
	</li>
	<li>
	Flukes: These are the left and right lobes on the tail. It&#39;s like having two giant paddles on their back end, which they use to thrust up and down.
	</li>
	<li>
	Dorsal Fin: Ever seen a dolphin and wondered why they have that fin on their back? 🐬 It keeps them stable and prevents them from rolling like a barrel in the ocean.
	</li>
	<li>
	Blubber: Not just a fun word to say! It also helps with buoyancy. Picture a dolphin napping just below the water&#39;s surface, floating thanks to its blubber. 🛌
	</li>
</ul>

Consider the graceful dolphin. It has a sleek body and can swim at fast speeds. Its smooth skin, streamlined shape, dorsal fin, and powerful flukes make it a master of aquatic movement. Next time you see one leap out of the water, you&#39;ll know all the amazing adaptations at play!

Marine mammals have truly transformed themselves to master life in water. They&#39;ve evolved to be smooth operators, minimizing resistance and maximizing movement. From their body shape to their blubber, every detail has a purpose.

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Keep making a splash in your studies! 🌊📘🐠

Theme B - Form & Function

Marine Mammals' Evolution How They Mastered Swimming Adaptations

Table of content

Dive into the deep blue - marine mammals & their swimming prowess 🐬

The big picture

The need for speed - streamlining 🚀

Unlock the Full Content!

Theme B - Form & Function

Marine Mammals' Evolution How They Mastered Swimming Adaptations

Table of content

Dive into the deep blue - marine mammals & their swimming prowess 🐬

The big picture

The need for speed - streamlining 🚀

Unlock the Full Content!