2023
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Underwater noise
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Ghost fishing nets
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Pollution
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None of the above
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Detailed explanation-1: -The reported effects of boat or ship noise on marine mammals include changes in both physical and acoustic behavior, masking of communication and echolocation sounds, and stress.
Detailed explanation-2: -Underwater noise can interfere with key life functions of marine mammals (e.g., foraging, mating, nursing, resting, migrating) by impairing hearing sensitivity, masking acoustic signals, eliciting behavioral responses, or causing physiological stress.
Detailed explanation-3: -Unwanted sound, or noise, can have a large impact on the marine environment, because noise can blanket a very large area, potentially preventing fish or whales from hearing their prey or predators, finding their way, or connecting with mates, group members, or their young.
Detailed explanation-4: -Underwater noise created by shipping can disrupt ‘echolocation’, the sensory ability of whales and dolphins to find food and navigate underwater, while also drowning out their communication with each other, displacing them from habitats, and in extreme cases causing physical harm, including temporary hearing loss.