{"id":740,"date":"2003-06-24T03:45:47","date_gmt":"2003-06-24T03:45:47","guid":{"rendered":"http:\/\/agnieszkabiskup.com\/?p=740"},"modified":"2011-05-01T18:34:35","modified_gmt":"2011-05-01T23:34:35","slug":"dolphins-pump-down-the-volume","status":"publish","type":"post","link":"https:\/\/agnieszkabiskup.com\/?p=740","title":{"rendered":"dolphins pump down the volume"},"content":{"rendered":"<p><span style=\"color: #000000;\"><\/span>Just like bats (and submarines), dolphins send out  sonar signals to navigate as well as home in on prey. They emit  high-pitched sounds and then process the echoes that are bounced back  from distant objects to obtain a picture of their world.<span style=\"color: #000000;\"> But the problem is, as they get closer to their target, the echo  comes back not only faster, but louder, so loud that it could become  literally deafening. Bats can decrease the sensitivity of their hearing  by flexing their inner-ear muscles to cope with the problem, but dolphin  ears are less adaptable. So, how do dolphins keep from going deaf? Whitlow Au and Kelly  Benoit-Bird from the University of Hawaii&#8217;s Institute of Marine Biology  may have solved the mystery. In the June 19 <em>Nature,<\/em> they report that  instead of turning down their receivers, like bats, dolphins can adjust  the volume of their sonar clicks as they approach a target. <\/span><\/p>\n<h6><em>This news brief appeared in the Random Data column of the <\/em>Boston Globe&#8217;s<em> Health\/Science section on 6\/24\/2003.<\/em><\/h6>\n","protected":false},"excerpt":{"rendered":"<p>Just like bats (and submarines), dolphins send out sonar signals to navigate as well as home in on prey. They emit high-pitched sounds and then process the echoes that are bounced back from distant objects to obtain a picture of &hellip; <a href=\"https:\/\/agnieszkabiskup.com\/?p=740\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13,4],"tags":[],"class_list":["post-740","post","type-post","status-publish","format-standard","hentry","category-boston-globe-3","category-news-briefs"],"_links":{"self":[{"href":"https:\/\/agnieszkabiskup.com\/index.php?rest_route=\/wp\/v2\/posts\/740","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/agnieszkabiskup.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/agnieszkabiskup.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/agnieszkabiskup.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/agnieszkabiskup.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=740"}],"version-history":[{"count":2,"href":"https:\/\/agnieszkabiskup.com\/index.php?rest_route=\/wp\/v2\/posts\/740\/revisions"}],"predecessor-version":[{"id":1181,"href":"https:\/\/agnieszkabiskup.com\/index.php?rest_route=\/wp\/v2\/posts\/740\/revisions\/1181"}],"wp:attachment":[{"href":"https:\/\/agnieszkabiskup.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=740"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/agnieszkabiskup.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=740"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/agnieszkabiskup.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=740"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}