WEBVTT

00:00:00.031 --> 00:00:05.261
♪ [music] ♪

00:00:06.711 --> 00:00:08.579
>[MAN] This is the Van Veen grab.

00:00:08.579 --> 00:00:12.089
It's a surface sediment sampler
designed for taking samples

00:00:12.089 --> 00:00:14.995
on lake and riverbeds and large sumps.

00:00:14.995 --> 00:00:16.961
It's a stainless steel construction.

00:00:16.961 --> 00:00:19.418
This is a 1/2-liter model.

00:00:19.418 --> 00:00:22.719
They also come in 2, 6, and 12 liters.

00:00:23.603 --> 00:00:26.548
And the way it works is not
dissimilar from a mousetrap.

00:00:26.548 --> 00:00:29.941
We can just set it with this lever here.

00:00:29.941 --> 00:00:36.701
And now we can lift the whole unit and
we can lower it through a body of water

00:00:36.701 --> 00:00:40.570
And then, as it touches the lakebed,

00:00:40.570 --> 00:00:42.010
it releases,

00:00:42.010 --> 00:00:44.271
and then we can lift up again...

00:00:44.271 --> 00:00:47.712
and we get a nice, surface sample

00:00:47.712 --> 00:00:51.157
and now we can pull it back
to the water's surface.

00:01:01.383 --> 00:01:03.697
All right, there she goes.

00:01:13.928 --> 00:01:16.328
>[WOMAN] It kind of lowered farther that time,

00:01:16.328 --> 00:01:18.364
so maybe it gathered some sediment.

00:01:18.364 --> 00:01:20.831
[unclear]

00:01:20.831 --> 00:01:23.961
>[NARRATOR] Oh, looking good.
It has caught something.

00:01:23.961 --> 00:01:25.972
>[WOMAN] Yeah, It feels a bit heavier.

00:01:36.455 --> 00:01:38.635
>[MAN] There we go.
>[WOMAN] Yeah.

00:01:38.635 --> 00:01:43.321
♪ [music] ♪

00:01:43.321 --> 00:01:50.778
♪ ♪