Dear MEL Topic Readers,
Covid 2020: The year of the quiet ocean
Of the 34,000 fish species in the ocean, about two-thirds use a wide
variety of sounds for communication, foraging, reproduction, and territorial interactions.
For example, whales make various sounds for navigation, social bonding, mating,
and warning. However, a variety of noises is created in oceans from geophysical
sources, such as volcanic activities, vents, currents, sea ice, and storms. In
addition, as human activity increases in and on oceans for shipping, traveling,
and military activity, anthropogenic noise rises, too, which disturbs the life
and communication of marine animals. However, when the COVID-19 pandemic hit the
world in 2020, such manmade noise pollution significantly declined, allowing
scientists to hear what the ocean sounded like without so much noise pollution.
Indeed, for animals and creatures that swim and live underwater, the sound of
screws is much more bothersome than we think.
Read the article and learn about what the underwater world sounds like.
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