1
00:00:00,000 --> 00:00:04,800
It's really too bad Bianca couldn't make it, but I'll be sure to take really good notes for her.

2
00:00:04,800 --> 00:00:06,880
Hey look, this is a cool aquarium.

3
00:00:06,880 --> 00:00:08,800
Hey guys, come on over here.

4
00:00:08,800 --> 00:00:12,480
My name's Beth Fershaw, I'm a curator here at the Virginia Marine Science Museum.

5
00:00:12,480 --> 00:00:14,160
Dr. Schechter told me you'd be coming.

6
00:00:14,880 --> 00:00:15,520
What's this?

7
00:00:16,160 --> 00:00:19,920
This is the seal habitat, but I bet you guys want to see the shark aquarium.

8
00:00:19,920 --> 00:00:21,520
Come on inside, let's check it out.

9
00:00:23,200 --> 00:00:26,640
Maybe that big nose can help us work through this stink problem.

10
00:00:26,640 --> 00:00:28,400
We're learning a lot about smells.

11
00:00:28,400 --> 00:00:31,920
We visited Dr. Schechter and he told us how our noses work.

12
00:00:31,920 --> 00:00:35,040
Maybe you and these sharks can help us learn more about smells.

13
00:00:35,040 --> 00:00:38,080
We know that some chemical compounds have smells to them

14
00:00:38,080 --> 00:00:41,600
and our noses have special cells that can receive those smells.

15
00:00:41,600 --> 00:00:46,640
That's right, those cells are called olfactory chemoreceptors and sharks have them too.

16
00:00:46,640 --> 00:00:51,680
Now if you live out of the water like you and me, the air carries the smell to our noses.

17
00:00:51,680 --> 00:00:55,360
If you live in the water like the sharks, the water carries the smell.

18
00:00:56,080 --> 00:00:56,580
What?

19
00:00:57,140 --> 00:01:03,220
What this means is, is that animals, like those sharks, have a sense of smell, even under water.

20
00:01:03,220 --> 00:01:06,820
Does this mean that sharks have a better sense of smell than we do?

21
00:01:07,860 --> 00:01:10,180
So they can smell hamburgers better than me?

22
00:01:10,900 --> 00:01:12,100
Well, not exactly.

23
00:01:12,100 --> 00:01:15,940
Their sense of smell is tuned to the smells that help them survive in the wild.

24
00:01:15,940 --> 00:01:20,180
They're top predators and being able to smell their prey is very important.

25
00:01:20,180 --> 00:01:24,100
Did you know that the shark's brain is devoted mostly to its sense of smell?

26
00:01:24,100 --> 00:01:28,900
So when it comes to smelling, sharks really know how to get to the bottom of the stinky stuff.

27
00:01:29,460 --> 00:01:31,620
Take a long look at this shark's nose.

28
00:01:31,620 --> 00:01:36,580
Did you know that it can sniff out one drop of blood in 25 gallons of water?

29
00:01:37,700 --> 00:01:40,020
I guess we better go back and piece this all together.

30
00:01:40,020 --> 00:01:41,060
See you later.

31
00:01:41,060 --> 00:01:41,860
Thanks a lot.

32
00:01:41,860 --> 00:01:43,060
Thanks for helping us.