The Great Barrier Reef

 

                 One of the goals on my “bucket list” is to scuba dive or snorkel in the Great Barrier Reef.  So I’ve decided to do some research to help peak my interest.  The Great Barrier Reef is considered to be one of the seven wonders of the natural world and it is the only living thing that is visible from outer space. The Great Barrier Reef covers an area greater than that of the Great Wall of China, spanning over 1,800 miles almost parallel to the coast of Queensland, Australia.  The reef possesses the greatest array of coral in the entire ocean, more than 400 different species.  Not only is the Great Barrier Reef home to vast amounts of coral, it also is a domicile for dolphins, sponges, and over 1,500 species of tropical fish.  Divers will never tire of the endless opportunities to view tropical corals, fish, and other animals, including the 120 year old giant clams.

                Several factors threaten the livelihood of the Great Barrier Reef.  Elevated ocean temperatures resulting from climate change cause a bleaching effect on the coral systems.  The increasing in temperature causes the algae that live in the coral to be expelled exposing the corals’ limestone skeleton. The climate change can have massive ramifications for the corals’ ecosystem affecting all of its ecology.  Pollution is also another key threat to the reef. The declining water quality is caused by water runoff from farms that compromise the makeup of the ocean water. Overfishing, disrupting the fragile ecosystem, and shipping industries, also threaten the longevity of the Great Barrier Reef.

                The reef also has cultural and religious meaning to many tribes that live around it.  The Australian aborigines and the Torres Strait Islander people have been living in the area for thousands of years, making their livelihood and cultural traditions amongst the reef.  The reef is also a historical marker for many shipwrecks and pre-modern explorers.  In the last thirty to forty years, great strides have been made by the Australian government to create laws preserving and protecting the Great Barrier Reef. One source states that, “the Australian Parliament passed the Environment Protect and Biodiversity Conservation Act which improved the operation of national environmental law by providing guidance about regional biodiversity conservation priorities.”  This law has made significant progress in reducing pollution and shipping damages to the reef as well as protecting species that are already endangered.

                The Great Barrier Reef has always been a fascinating aspect of oceanography to me.  From the vast array of sea life to the less obvious living creatures like the coral and the sponges, the coral reef seems like a foreign world to someone who grew up in the central United States.  Even though I live thousands of miles aware from the reef, I see the value in oceanic conservation efforts and the need to preserve one the Earth’s most incredible natural beauties. Legislation and societal awareness could be very beneficial in keeping the reef intact, as already displayed by the Environment Protect and Biodiversity Conservation Act passed in 1999. Though I don’t live in Australia, have not ever been, and may not ever have the opportunity to go, I still appreciate the mysterious wonders of the reef and care strongly to see it taken care of for future generations to enjoy.

 Links to Resources:
 National Geographic Barrier Reef
greatbarrierreef.org
Wikipedia- Great Barrier Reef

Disney's Oceans

              For my third blog, I watched Disney’s Oceans.  It is a very well made documentary that tells much about the oceans and its inhabitants.  From the smallest parts, like the larvae of crustaceans, to the largest inhabitants, like the blue whale, oceans possess a vast array sea life, much of which we have yet to even discover. One fascinating scene of the film showed a pod of dolphins swimming at a rapid pace to chase and devour a school of sardines.  Then out of nowhere, “dive-bombing” birds got in the mix to get their fill of the sardines as well. And lastly a massive blue whale, trumped all of the participants to get his fill of the sardines before they were too dispersed for the remaining diners.  The blue whale is one of the largest animals in the history of the world.  Whales are magnificently fascinating creatures.  Humpback whales sleep upside down and can tread water while they sleep to maintain their position. Orca whales feed on young sea lions near the shores.  It’s amazing that they have the mental capacity to monitor the sea lions’ patterns and plan their attacks.

                Though the sun goes down, the creatures of the ocean do not sleep. Many of its inhabitants are more lively at night, in the dark disguise than they would be in the daylight.  Many of the crustaceans venture out at night. Crabs inhabit new homes, shrimp dig new hideouts, and moray eels look for their next meal.  One fascinating creature, a sea slug called a Spanish Dancer, seems much more radiant than any land slugs that we see. The smaller creatures at the lower ends of the food chain use the night time to change or move their homes and gather food for the next days. 

                Ocean creatures are well adapted to disguising.  The octopus can disguise itself and camouflage with its surroundings to capture its prey.  Garden eels blend in with the sand before striking their victims.  Though stone fish are not very fast or agile, they have superior camouflage capabilities like the octopus, and can look just like a stone (thus their name) and capture their unsuspecting victims.  The leafy sea dragon lives at the same depth and in the same area its entire life and is almost unnoticeable amongst the vegetation it inhabits. Each creature is uniquely designed with abilities to ensure its survival.

                Disney’s Oceans, is a wonderfully made movie.  The images they were able to capture are simply remarkable.  With modern-day technology, we are able to see the mysteries of the ocean like never before.  The movie also draws attention to the important issues of over fishing and the endangered animals that we need to fight to protect.  Many of the awesome creatures that are featured in the film are in jeopardy of extinction because of overly lenient fishing policies and pollution.  It raises the issues that if we don’t modify our behaviors now, many of these creatures won’t be around for our children to observe.  I think everyone should watch this film to gain an appreciation for the intricacy and delicacy of the oceans’ ecosystem.  After all, “human indifference is surely the oceans’ greatest threat.”