Home  /  Daily Current Affairs  /  17-01-2023 / Dolphins

Dolphins

Posted on January 17, 2023 by admin1  60

In News

A new study has found that noise generated by human activity makes it harder for dolphins to communicate and coordinate with each other.

  • As the levels of underwater noise increase, these mammals have to “shout” to each other.

About Dolphins

  • They are a type of marine mammal that belongs to cetaceans.
  • They are social mammals that communicate through squeaks, whistles, and clicks. They also use echolocation in order to locate food and other objects.
    • Therefore, anthropogenic noise coming from large commercial ships, military sonars or offshore drilling can severely impact their well-being.
  • They are popularly noted for their grace, intelligence, playfulness, and friendliness to humans.
  • They can live in either fresh or saltwater. 
    • Distributed in marine environments worldwide, they range from equatorial to subpolar waters and also can be found in many major river systems.

Do you know?

  • The Gangetic river dolphin is India’s national aquatic animal. It is a Schedule I animal under the Wild Life (Protection) Act, of 1972. 
    • It has been declared an endangered species by the International Union for Conservation of Nature (IUCN).
  • It is one of four freshwater dolphin species in the world. The other three are found in the Yangtze river in China (now extinct), the Indus river in Pakistan, and the Amazon river in South America.
  • It lives in a zone where there is little or no current, helping them save energy. If they sense danger, they can dive into deep waters. 

Source:IE

 
Previous article Harvest Festivals of India
Next article Kalashnikov AK-203 Assault Rifles

Other News of the Day

In  News The Ministry of Environment, Forest and Climate Change (MoEF) has listed Neelakurinji ( Strobilanthes kunthiana) under Schedule III of the Wildlife (Protection) Act, 1972, including it on the list of protected plants. Image Courtesy:TH About Neelakurinji Kurinji or Neelakurinji is a shrub that grows in the shola forests of the Western Ghats in...
Read More

In News Indian Space Research Organisation (ISRO) is yet to receive approval from the Indian government for the Venus mission and the mission could, as a result, be postponed to 2031. ISRO received an allocation of ?13,700 crores in the 2022-2023 budget, marginally higher than the year before. The bulk was diverted to the human...
Read More

In News Recently, a Report stated that Microfinance Institutions (MFI) will play a leading role in the growth process of India. Key Points Support system:  MFIs have acted as a financial support system to low-income households by offering credit access to six crore borrowers in the last few years. Changes with time:  From February 2017...
Read More

In News Recently, a report by the American Cancer Society stated that Deaths due to cancer have declined by 33% in the United States since 1991. Key Points US: Declining number of deaths:  This has translated into 3.8 million fewer deaths. Reason of decline:  Early detection,  Lower rates of smoking, Improvements in cancer treatment. Types...
Read More

In News Recently, concerns have been raised by academics and teachers about ethical dilemmas associated with the potential of ChatGPT. About As a language model, ChatGPT does not have the capacity for ethical reasoning or decision-making. Thus, It can be used for a variety of purposes, some of which may raise ethical concerns. OpenAI has...
Read More

In Context Recently the Union Law Minister Kiren Rijiju has written to Chief Justice of India D Y Chandrachud to give suggestions on the appointment of judges. More about the news Government representative in Collegiums: According to Union Minister Rijiju’s letter, government representatives should be a part of the Supreme Court and High Court Collegiums. ...
Read More

In Context Recently, a strand of antimicrobial-resistant gonorrhoea outbreak has hit Kenya. More about the news About: The outbreak of Neisseria gonorrhoeae is not just a threat to the citizens of the East African anchor state but the region as a whole, according to experts.  The outbreak is a major concern among health practitioners, especially...
Read More