Analyse the various threats faced by underwater animals around the world.
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Answer:Commercial Hunting. Whaling, shark, and dolphin hunting are among some of the most imminent threats to marine mammals. Slaughtering animals for sport or to sell as specialty foods is a practice that has greatly reduced the number of large marine mammals across the world’s oceans.
Explanation:
Answer:
1. Ocean noise
This is a form of pollution you can’t see – but for whales and dolphins, who hunt and communicate using sound, the noise caused by shipping, seismic exploration by the oil and gas industry, and military sonar is hugely disruptive. It can prevent animals from finding food, meeting a mate, and detecting predators - ultimately threatening their very survival.
2. Ship strikes
Whales may be huge, but they’re not huge enough to survive collisions with massive container ships. As the number of ships on our oceans increases, there are more and more of these accidents, which often leave whales with horrific injuries that can cause a slow and painful death. At IFAW, we’re working hard to tackle this problem by lobbying to move shipping lanes away from critical whale habitat and encouraging vessels to travel more slowly.
3. Climate change
Increasing global temperatures are already having a huge impact on our oceans. Coral reefs, for example, are extremely sensitive to warming oceans, which cause them to bleach and eventually die. It’s estimated that 75% of the world’s reefs are threatened. Ocean acidification, caused by increased carbon dioxide in the atmosphere, is dissolving the shells of animals such as oysters, shrimp, and lobsters and is having other widespread effects on marine life.
4. Entanglement in fishing gear
Marine animals, from whales, dolphins, and seals to turtles and seabirds, often become caught and trapped in the nets and lines used by commercial fisheries. Whales have been known to drag lobster traps for thousands of miles during their annual migrations, adding extra weight and slowing them down, making it harder for them to feed, which can eventually lead to starvation and death.
5. Plastics and ocean debris
An estimated 8 million tonnes of plastic end up in our oceans each year. Our discarded bottles, plastic bags, and packaging are choking and entangling animals, or breaking up into tiny pieces that can be swallowed, releasing toxic chemicals along the way. Over 90% of seabirds are now thought to have plastic pieces in their stomachs.
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