Name: 烏龜能在殼外生活嗎？ (Could a turtle live outside its shell?)
Uploaded: 2021-01-14T07:46:16.000Z
Duration: 5 min 17 s
Description: 【看影片學英語】數萬部 YouTube 影片，搭配英漢字典即點即查，輕鬆掌握單字發音與用法，長久累積看電影不必再看字幕。

Tortoises are turtles
that live on dry land.

because someone named Samaliya
has a question for us about

You know how turtles have this
shell that they can hide in.

completely, like crawl out of
it and leave its shell behind?

Like, you might wonder, maybe
a turtle is like a hermit crab.

Hermit crabs are these
creatures that live in shells,

They can come out of
their shells completely.

Well, let's look at a
picture of a turtle up close.

If you want to pause the video
to take a longer look at it,

It feels similar to
how a fingernail feels.

And the top part here, what
looks like a pattern or design,

I learned once is actually
separate pieces, almost

Now, none of this really
helps us figure out

if a turtle can come out
of its shell, though.

and these parts on top
and bottom are the shell.

that there's no space
between the turtle's

A turtle's skin is
connected to its shell.

So I have to say, it seems like
a turtle's shell is probably

is no, a turtle can't
come out of its shell

And for that, we need
to see a turtle's bones.

This is a real picture
of a turtle skeleton.

We can see turtles do have
bones, just like we do.

You see here's the skull, here's
the neck bones, leg bones.

Again, if you want to
pause the video to look,

Now maybe you saw what I
saw, that the shell itself,

In fact, if we flip a
turtle skeleton over

so that we can look at
the turtle from below,

It looks like the shell is
just part of the backbone.

A really long time ago,
it seems that turtles

didn't have the complete
shells that they have today.

Instead, a long time ago, it
was just really long backbones.

turtle backbones have gotten
bigger and bigger, to the point

where the backbone now forms a
complete shell on the turtle's

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烏龜能在殼外生活嗎？ (Could a turtle live outside its shell?)

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