This shows that an environmental threat that blue crabs face is pollution because if about 1 million animals are dying each year because of pollution, we have a serious problem. Furthermore, another ecological hazard that this incredible animal faces is fishing and it’s equipment. According to the text, “Modern fishing methods have created some serious problems for the ocean. The populations of almost all fish species that we eat have shrunken,”(Dignan 14). This proves that another environmental threat that blue crabs faces are fishing because they may not be a type of fish, but, like most crabs, they are fished, caught and sold.
Hence, overfishing threatens coastal nations down to the local level, devastating communities whose dominant sources of labor and revenue hinges on healthy, plentiful stocks of fish. Also, marine life imbalance may affect the targeted fishing of top predators such as billfish, sharks and tuna that eventually disturbs marine communities. In fact, it is causing increased abundance of smaller marine animals at the bottom of the food chain. This in turn has impacts on the rest of the marine ecosystem, such as the increased growth of algae and threats to coral reef health. Overfishing is also closely tied to by catch, another serious marine threat that causes the needless loss of billions of fish, along with marine turtles and
This can result in lung, kidney, and liver damage, as well as death from toxins. Oil spills also have indirect effects on these mammals, such as habitat loss and a diminishing food supply. Lastly, the oil slicks can make animals blind from continuous exposure. Because oil spills cause so much damage, many marine mammals die because of it. Whales, including dolphins,
The collapse of the marine ecosystem would result in the a massive amount of loss in fish stocks, resulting in the loss of business and the starvation of many people around the world that rely on fish as their major supply of food. (The main cause of overfishing is large fishing companies
Because they are unable to untangle themselves, they also die from starvation or from their inability to escape predators. On a report in 2006 called Plastic Debris in the World’s Oceans, It was estimated that at least 267 different animal species have suffered from entanglement and ingestion of plastic debris. Some species are consumers of jelly fish, but often mistake plastic bags for their natural prey, which obstructs the oesophagus of sea turtles therefor killing them. It has been estimated that about 400,000 marine mammals die annually due to plastic pollutions in the ocean. As said by Friedrich Nietzsche, Thus Spoke Zarathustra “One must be a sea, to receive a polluted stream without becoming impure”.
Although recycling makes a difference, many container still end up in beaches and oceans. The drink containers cause death and injuries for many wildlife and marine creatures. Animals like whales and dolphins become victims of land litter, as 80% of majority of the plastics comes directly from land. Dr Jennifer Lavers, researched the impacts of plastics on marine life, claims that 85% of Australian marine birds are affected by plastics (Stop trashing Australia, 2012). Apart from animals getting tangled in debris, it is extremely harmful when there is run down fishing gear, as it results in ‘ghost fishing’.
Pteropods are important sources of nutrition for many types of fish, whales and birds in polar and sub-polar regions. The effects on corals, already highly sensitive to their environment, are particularly concerning, since one part of all marine species depend on coral reefs for homes, nurseries, feeding grounds and spawning sites. This equates to nine million marine species, including four thousand species of fish. ocean forecasts the mass extinction of corals in both tropical and cold waters this century, if carbon emissions growth continues unchecked. How will ocean acidification affect
The shrimp rides on the back of the sea cucumber, while the shrimp gets a ride, the sea cucumber could care less. This is an example of commensalism. Sadly in the ocean there is plenty of human destruction to talk about. Some examples are overfishing, which is a problem in 90% of the world’s oceans. tourism, development, shipping and pollution.
Other invasive plants are Melaleuca, Old World climbing fern, Australian Pine, Brazilian Pepper, and Seaside Mahoe. Power plants released mercury to the atmosphere and fell to the water as rain. Phosphorus and mercury caused water pollution and negatively affected many animals and the ecosystem. Many panthers were found dead. We have to improve the water quality in the Everglades otherwise more animals are going to die.
This kind of behavior can lead to the extinction of certain marine animals. One link that breaks off of the food chain could affect the entire chain and lead to more extinctions and overpopulation. “The practice destroys the physical environments of marine life, and distorts the entire food chain in the oceans. If the food chain breaks, the consequences will ripple up and down to all the living organisms that are in the chain” (eschooltoday). If the food chain falls apart it will not only be marine life that is affected but human life too.