Thames estuary revealed as critical habitat for harbour porpoises

The video discusses the significance of porpoises in the UK and Europe, highlighting their unique characteristics and behaviors. It explains how porpoises are shy, travel in small pods, and avoid boats. The video also outlines the methods used to survey these marine animals, including the use of survey vessels and hydrophones to detect their presence both visually and acoustically.

What is the significance of certain areas in the UK and Europe being protected?

• They are important for tourism.

• They are crucial for marine life conservation.

• They are used for military purposes.

• They are designated for fishing activities.

How do the small cetaceans described differ from dolphins?

• They are larger in size.

• They are more social.

• They have longer noses.

• They have flat noses.

What is the typical group size in which these cetaceans travel?

• In large pods of 20 or more.

• In pairs or small groups.

• In groups of 10 to 15.

• Alone, without any company.

What is a notable behavior of these cetaceans regarding boats?

• They often approach boats.

• They are aggressive towards boats.

• They follow boats for long distances.

• They avoid boats and are not very surface active.

What technology is used to detect the presence of these cetaceans?

• Satellite tracking.

• Hydrophones.

• Sonar devices.

• Underwater cameras.