Question

ゲスト

日本語訳お願いします！！
perspectivⅡ
lesson3
part3
です。

Im 1997, a team of researchers at Zurich UniverS1ty

Im Switzerland first witnessed dolphins using tool8 1
This is probabIy the

Shark Bay、Western Australia.
als.

     m
only known case of tool use by marine mnarn1
her

Dolphins are thought to be clever animals becau8@ 【
1

brain-to-body-mass ratio is greater than that Oo

other animals except humans. But previously they had

not been considered to be tool-users.

When the researchers were observing the dolphins
im Shark Bay, they saw something strange over their 」
beaks. It looked 8s、 they had massive tumors. The
objects turned out to be marine sponges broken off from
the seabed. The dolphins were holding sponges over
ther beaks and appeared to be usmg them as a fishing
tool while they were searching the sea foor. It jisi
believed that these sponges help protect the dolphins*
beaks from debris. Without Sponges, the dolphins might

hurt their beaks.

This behavior has been observed only in Shark Bay,

 and it is shown exclusively by a small group of female
dolphins and their daughters. The research team
analyzed “spongers” and  "nonspongers” to find out
whether the behavior is acquired through social learning
or transmntted genetically. They found that most of the
Spomge-uslng dolphins belonged to the same family.
中he behavior appears to be passed down mostly from

mothers to thenr daughters, so it 1s probably acquired

through social learnng.

perspective ⅱ lesson3のpart3です。

Answer 1

ゲスト

Google翻訳ではこんな感じでした！