Scientists have known for decades that the numbers of some shark species are decreasing. But a new study shows just how severely worldwide populations have dropped in the past 50 years. The numbers of oceanic sharks and rays fell more than 70 percent worldwide between 1970 and 2018. The information comes from a study that appeared recently in the publication Nature. Stuart Sandin is a marine biologist who works at the Scripps Institution of Oceanography. He says that sharks are great hunters, fast swimmers and have extraordinary senses. Sandin adds that they can identify any changes in the ocean from a great distance, such as smells or tiny changes in water flow. Their ability to quickly sense anything outside the norm in their environment helps them find food in the open ocean. But it also makes them especially at risk in the face of increased international fishing pressure.
Title: Shark Populations Dropped 71 Percent Since 1970
Content: <div id='article-page'><div id='article-content' data-media-url='//news-app-staging.s3.amazonaws.com' data-base-url='//news-app-staging.herokuapp.com' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/4835/B.wav' data-capture-url='//staging.analytics.lingraphica.com/events/capture_news' data-article-title='Shark Populations Dropped 71 Percent Since 1970' data-article-id='5360'><script src='//news-app-staging.herokuapp.com/javascripts/getscripts.js'></script><link rel='stylesheet' href='//news-app-staging.herokuapp.com/stylesheets/article.css' type='text/css' /><div class='article'><p><span data-start-time='0' data-end-time='7271'>Scientists have known for decades that the numbers of some shark species are decreasing. </span> <span data-start-time='7271' data-end-time='17000'>But a new study shows just how severely worldwide populations have dropped in the past 50 years.</span> <span data-start-time='17000' data-end-time='29208'>The numbers of oceanic sharks and rays fell more than 70 percent worldwide between 1970 and 2018. </span> <span data-start-time='29208' data-end-time='36771'>The information comes from a study that appeared recently in the publication Nature.</span> <span data-start-time='36771' data-end-time='45604'>Stuart Sandin is a marine biologist who works at the Scripps Institution of Oceanography. </span> <span data-start-time='45604' data-end-time='55188'>He says that sharks are great hunters, fast swimmers and have extraordinary senses.</span> <span data-start-time='55188' data-end-time='68063'>Sandin adds that they can identify any changes in the ocean from a great distance, such as smells or tiny changes in water flow.</span> <span data-start-time='68063' data-end-time='79333'>Their ability to quickly sense anything outside the norm in their environment helps them find food in the open ocean. </span> <span data-start-time='79333' data-end-time='87958'>But it also makes them especially at risk in the face of increased international fishing pressure.</span> </p></div><div class='control-buttons-sticky' style='display:none;'><div class='control-buttons'><button title='Back' class='back' disabled='disabled'></button><button title='Play' class='play' disabled='disabled'></button><button title='Pause' class='pause' style='display:none;'></button><button title='Forward' class='forward' disabled='disabled'></button><button class='finished-reading' style='display:none;'>Done</button></div></div></div><div id='article-media'><div id='media-image'><img src='https://news-app-production.s3.amazonaws.com/articles/4835/B.jpg'/></div></div><div id='question-content' style='display:none;'><div class='vocabulary_question question-container' data-question-id=16716 data-hint-location='0' style='display:none;'><div class='question' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/4835/what_does_species_mean.wav'>What does species mean?</div><div class='choices' data-correct-choice='a group of animals or plants that are similar and can reproduce together'><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/4835/the_four_phases_of_the_moon.wav'><span>the four phases of the moon</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/4835/a_group_of_animals_or_plants_that_are_similar_and_can_reproduce_together.wav'><span>a group of animals or plants that are similar and can reproduce together</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/4835/flavorings_that_can_be_added_to_cooking.wav'><span>flavorings that can be added to cooking</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/4835/a_group_of_different_animals_that_are_in_competition_with_each_other.wav'><span>a group of different animals that are in competition with each other</span></div></div></div><div class='multiple_choice_question question-container' data-question-id=16717 data-hint-location='79333' style='display:none;'><div class='question' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/4835/according_to_this_article_what_puts_sharks_especially_at_risk.wav'>According to this article, what puts sharks especially at risk?</div><div class='choices' data-correct-choice='increased international fishing'><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/4835/pollution.wav'><span>pollution</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/4835/increased_international_fishing.wav'><span>increased international fishing</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/4835/lack_of_food.wav'><span>lack of food</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/4835/large_predators.wav'><span>large predators</span></div></div></div><div class='sentence_completion_question question-container' data-question-id=16718 data-hint-location='17000' style='display:none;'><div class='question' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/4835/between_1970_and_2018_the_number_of_sharks_and_rays_fell_more_than__blank_.wav'>Between 1970 and 2018, the number of sharks and rays fell more than <span class='blank'>70 percent </span>.</div><div class='choices' data-correct-choice='70 percent '><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/4835/10_percent_.wav'><span>10 percent </span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/4835/70_percent_.wav'><span>70 percent </span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/4835/50_percent_.wav'><span>50 percent </span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/4835/90_percent_.wav'><span>90 percent </span></div></div></div><div class='question-buttons'><button class='skip-button'></button><button class='hint-button'></button><button class='speak-button'></button></div></div></div>
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