Octopus Evolution: A Separate Path on the Tree of Life
In Octopus Evolution: A Separate Path on the Tree of Life, ecologist David Scheel describes the journey through the unique evolutionary history of octopuses, showing how these incredible creatures took a completely separate path from other life forms. In his class at Alaska Pacific University, he explains how, over half a billion years ago, octopuses and humans might have shared a common ancestor — but since then, octopuses developed their own specialized brain, heart, and eyes! This video is excerpted from BBC’s Natural World: The Octopus in My House, a remarkable series about a professor and the extraordinary relationship he develops with an octopus when he invites it to live in his home.
Lesson Express
Q: Why does David Scheel believe that octopuses and humans shared a common ancestor over half a billion years ago, despite evolving in such different ways?
A: David Scheel suggests that, like many animals, octopuses and humans might have evolved from a shared ancestor due to similar genetic origins early in Earth’s history. However, millions of years of separate evolution led each species down its own path, resulting in dramatically different adaptations that reflect their unique survival strategies.
Q: How might the fact that octopuses developed their own unique brain, heart, and eyes challenge our understanding of evolutionary biology?
A: The octopus’s distinct brain, heart, and eyes challenge traditional ideas of evolutionary biology by showing how different life forms can evolve complex features independently, without a direct link to other species. It raises questions about the flexibility of evolution and how environmental pressures can shape organisms in unexpected ways.
Q: How could the idea of a shared common ancestor between octopuses and humans help us better understand the connections between all living things?
A: The idea of a shared common ancestor suggests that all living creatures are connected in some way, even if they look and behave very differently. It helps us realize that life on Earth has evolved from common origins, and though species may seem completely different now, they share a distant evolutionary link.
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In Born Ready: The Secret Lives of Newborn Octopuses, Squid, and Cuttlefish, ecologist David Scheel joins fellow researcher Brett to explore the fascinating world of newborn octopuses, squid, and cuttlefish. These creatures are born with the ability to change color while still in their sac, preparing them for life underwater. As soon as they hatch, they are independent hunters, capable of targeting prey even larger than themselves. This video is excerpted from BBC’s Natural World: The Octopus in My House, a remarkable series about a professor and the extraordinary relationship he develops with an octopus when he invites it to live in his home.
In Octopus IQ: The Jar Challenge, ecologist David Scheel introduces Heidi the octopus to a clever challenge — a jar with a crab inside and a screw top lid. As Heidi figures out how to unscrew the lid, Scheel explains the remarkable way octopus intelligence works: their smarts aren’t just in their head but also in their eight arms, which can act independently of each other. This video is excerpted from BBC’s Natural World: The Octopus in My House, a remarkable series about a professor and the extraordinary relationship he develops with an octopus when he invites it to live in his home.
In Hiding in Plain Sight: The Octopus That Invented a Mobile Home, a veined octopus in Indonesia amazes researchers with its clever survival skills. Living on sandy ocean flats, it carries coconut shells to create a portable shelter. By using these shells to hide and ambush prey, the octopus becomes one of the rare animals — less than 1% — to demonstrate tool use and thinking ahead. This video is excerpted from BBC’s Natural World: The Octopus in My House, a remarkable series about a professor and the extraordinary relationship he develops with an octopus when he invites it to live in his home.
In Born Ready: The Secret Lives of Newborn Octopuses, Squid, and Cuttlefish, ecologist David Scheel joins fellow researcher Brett to explore the fascinating world of newborn octopuses, squid, and cuttlefish. These creatures are born with the ability to change color while still in their sac, preparing them for life underwater. As soon as they hatch, they are independent hunters, capable of targeting prey even larger than themselves. This video is excerpted from BBC’s Natural World: The Octopus in My House, a remarkable series about a professor and the extraordinary relationship he develops with an octopus when he invites it to live in his home.
In Octopus IQ: The Jar Challenge, ecologist David Scheel introduces Heidi the octopus to a clever challenge — a jar with a crab inside and a screw top lid. As Heidi figures out how to unscrew the lid, Scheel explains the remarkable way octopus intelligence works: their smarts aren’t just in their head but also in their eight arms, which can act independently of each other. This video is excerpted from BBC’s Natural World: The Octopus in My House, a remarkable series about a professor and the extraordinary relationship he develops with an octopus when he invites it to live in his home.
In Hiding in Plain Sight: The Octopus That Invented a Mobile Home, a veined octopus in Indonesia amazes researchers with its clever survival skills. Living on sandy ocean flats, it carries coconut shells to create a portable shelter. By using these shells to hide and ambush prey, the octopus becomes one of the rare animals — less than 1% — to demonstrate tool use and thinking ahead. This video is excerpted from BBC’s Natural World: The Octopus in My House, a remarkable series about a professor and the extraordinary relationship he develops with an octopus when he invites it to live in his home.