Experts urged to ratify Minamata Convention to phase out mercury-added products পারদযুক্ত পণ্যের ব্যবহার বন্ধে মিনামাতা কনভেনশন অনুমোদনের আহ্বান সেন্টমার্টিন সৈকতে প্লাস্টিকের আগ্রাসন 72 birds die eating pesticide-treated masakalai Educate girls to save the planet শিশুর সর্দি-কাশি সারানোর ঘরোয়া উপায় 50 Books All Kids Should Read Before They’re 12 24 thousand under 5 children die of pneumonia in Bangladesh annually গ্রিনহাউস গ্যাস কমানোর লক্ষ্যে নানা উদ্যোগ Maldives: Eco-friendly product export destination for Bangladesh

Rising numbers of great white sharks headed toward Cape Cod, scientists say


Figure rises for second consecutive year, says Massachusetts’ top shark expert, warning of ‘public safety issue’ despite no deaths in state’s waters since 1936. Great white sharks are swimming toward the waters off Massachusetts in rising numbers, scientists say, after a second consecutive year showing an increase in predators to Cape Cod. The latest data from a multiyear study of the ocean predators found that the number of sharks in waters off the vacation haven appeared to be on the rise, said Greg Skomal, a senior scientist with the Massachusetts division of marine fisheries, and the state’s top shark expert. The sharks are after seals, not humans, and towns are using the information from the study to keep it that way. “How long does it stay and where does it go are the questions we’re trying to answer,” Skomal said. “But for the towns, it’s a public safety issue.” Researchers using a plane and boats spotted 147 individual white sharks last summer. That was up slightly from 2015, but significantly more than the 80 individual sharks spotted in 2014, the first year of the study, funded by the Atlantic White Shark Conservancy. More than half the white sharks spotted last summer had not previously been documented by this study. Researchers have also tagged more than 100 to track their movements. The white shark population was probably significantly larger, because the scientists could not possibly spot all of them, Skomal said. Two of the more interesting findings are the increasing number of young sharks, and that they appear to be swimming farther afield. “Last summer, we saw greater numbers of smaller sharks, including juveniles, and that tells us that the population is rebuilding,” Skomal said. Great whites, made famous in the 1975 movie Jaws, about a monstrous shark that terrorizes a fictional New England resort town, journey to Cape Cod waters every year to feast on seals. Once hunted to near extinction, the now protected seals have rebounded in great numbers.

Read More: http://www.theguardian.com/environment/2017/mar/12/great-white-sharks-cape-cod-massachusetts

Posted by on Mar 13 2017. Filed under Wildlife. You can follow any responses to this entry through the RSS 2.0. You can leave a response or trackback to this entry

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