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Killer whales have been killing great white sharks off South African shores. But lately, there's been a mysterious disappearance of great white sharks in these waters. AdvertisementAdvertisementFor years, great white sharks were turning up dead on South Africa's False Bay and Gansbaai shores missing something crucial — their livers. The tourism industry in Gaansbi, South Africa relied on the large population of great white sharks found in the area. In North America, for example, at the Southeast Farallon Islands great white sharks have been recorded fleeing from hunting areas after killer whales showed up.
Persons: there's, , Michelle Jewell, Dan Kitwood, Jewell, There's Organizations: Service, Michigan State University Museum, Hakai, KwaZulu, Hakai Magazine Locations: Algoa, Natal, Gaansbi, South Africa, North America, Farallon
National Geographic captured humpback whales interrupting orcas that were hunting a seal in Antarctica. But then, Gregory said in the video, two humpback whales appeared out of nowhere. AdvertisementAdvertisementWhile killer whales do not pose a direct threat to adult humpback whales, which are much larger than orcas, killer whales do prey on humpback whale calves. While most people believe the humpbacks are swimming over to save the seal, the seal may actually be swimming toward the humpbacks to save itself. Sea lions and seals have been captured hopping onto boats in order to evade killer whales.
Persons: Bertie Gregory, Gregory, Leigh Hickmott, Andrew Trites, Trites, Robert Pitman, Pitman Organizations: Geographic, Service, University of St, Marine Mammal Research, University of British, Biologists, US, Oceanic, Atmospheric Administration, Hakai Magazine Locations: Antarctica, Wall, Silicon, Andrews, Scotland, University of British Columbia, Canada, British Columbia
Amsterdam, Venice, and French Polynesia are among the places that have banned cruise ships. Banning cruise ships addresses two major problems that tourism destinations around the world are struggling to contain: hoards of people and environmental destruction. The Amsterdam City Council passed a measure Thursday that will ban cruise ships from docking in the Dutch capital. French Polynesia also banned mega cruise ships last year, citing concerns about the burden on local infrastructure and ecosystem conservation. So whether they are full bans or just limits, the cruise industry is likely to face more restrictions at the local levels in the future.
Organizations: Amsterdam City, Officials, Cruises, Hakai Magazine Locations: Amsterdam, Venice, Polynesia, Barcelona, city's, Santorini, Alaska, Juneau
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