I. A Weddell seal hunts
for food.
A. A camera is mounted
on its head.
B. It takes pictures of the kill.
II. The camera helps scientists
to learn about sea mammals.
A. They learn how they
dive deep in the ocean.
B. They learn how the hunt for food.
C. They learn how they keep away from animals hunting them.
D. These mammals have to breathe.
III. Terrie Williams is
one of the researchers.
A. She works at University
of California Santa Cruz.
B. She explains how these mammals dive.
1. The lungs press
together.
2. This means they do not float as well.
3. Because the animals are heavy they fall like rocks.
C. Research appears in
the April 7th issue of the journal, Science.
IV. Terrie Williams studied
a blue whale’s dive.
A. The whale did not
seem to move in the video.
B. They made the video run faster.
C. It was easier to see the whale different movements.
1. The whale was swimming.
2. The whate was gliding.
V. Uses of video cameras
A. They used a backward
looking camera.
1. It was on a bottle
nosed dolphin.
2. It recorded the strong kick at the beginning of a dive.
B. Problems
1. It is hard to get
the instruments to stick on a dolphin.
2. The dolphin skin falls off.
C. Solution
1. A special dorsal
pack was developed.
2. Special suction cups were made to attach it.
a. Small suction
cups for dolphins
b. Really large suction cups for whales
D. Pictures are helping
scientists to understand life under the sea.
