Embedded Files
Negative Impacts
Negative Impacts
The Common Dolphin highlights two forms of Negative Impact: Intense Human Activity and Invasive Species
Often seen playing at the bow of boats, the Common Dolphin (Delphinus delphis) is dark grey coloured on the back with lighter grey, yellow and gold markings along its sides. They are Least Concern worldwide, and are the most numerous Cetacean in the world, yet they are Endangered in the Mediterranean. The food web has changed recently due to the arrival of a species called Rhopilema nomadica.
Rhopilema nomadica
Rhopilema nomadica
Rhopilema nomadica, known as the nomad jellyfish, is native to the Indian Ocean. It prefers warm ocean waters and can move to different habitats if the sea surface temperatures get warmer. It is considered an invasive species in the Mediterranean Sea and its presense can impact existing food webs. It also has a painful sting making its spread of concern for both marine biodiversity and beach activities.
Positive Impacts with Greg
Positive Impacts with Greg
Greg Lecoeur left his job to pursue his passion of marine photography and his incredible photos and videos of underwater biodiversity are inspirational and educational. He won the 2016 National Geographic Nature Photographer of the Year and is a contributor to the National Geographic Image Collection. His work is truely inspirational and helps educate others and raise awareness about marine biodiversity and ocean conservation.
Amazing documentary of the sardine run off the coast of South Africa, link. The Sardine Run in South Africa is a great visual example of a food web!
Curious to see more amazing photos by Grep Lecoeur? Be taken on an adventure and see the power of photography, and how he is making a positive impact through art, link.
Play the digital game and see if you know your trophic levels, link.
Summary: We've learned about common dolphins, intense human activity and invasive species, and positive ways we can make a difference.
Write your ocean journal entry! What changes do you want to see? How can you make them happen?
Page updated
Google Sites
Report abuse