Article:
Thousands of sharks near shore are part of an annual migration of blacktip sharks moving into feeding grounds near Palm Beach, Fla. 
  
 Spike in violent crime spreads to L.A., but still no alarm bells 
  
 Hunter Mason (l.) and Olivia Murat, on spring break from the University of Indianapolis, relax on the beach Tuesday in Destin, Fla. Thousands of blacktip sharks are brushing past Florida's spring break beaches, raising alarm among swimmers and lifeguards. 
  
 Thousands of four- to five-foot blacktip sharks are brushing past America's premier spring break beaches, raising alarm among swimmers and lifeguards but also drawing new attention to a stunning natural phenomena. 
  
 An annual migration of a distinct population of sharks begins off the tip of Florida and moves into an area off Palm Beach in February and March, where the sharks congregate close to shore as the offshore shelf narrows – a prime spot for the small baitfish that the sharks feed on. 
  
 The sharks are drawing attention for their natural showmanship, as well. They're often seen making spinning jumps out of the water. And thanks to the clear water and white sands of south Florida, they're easy to spot and view, especially for lifeguards from their elevated chairs. 
  
 During the annual migration, "they hang onto the coast and follow the baitfish, which makes them super-easy to see, especially when they get brought together in a tight group," says Shari Tellman, a researcher at Florida Atlantic University's Elasmobranch Research Laboratory, or "the shark lab." 
  
 Ms. Tellman and other researchers have been tracking the blacktip shark migration by Cessna airplane since 2011, trying to understand how climate change – specifically warmer average water temperatures – may affect the migration and the dynamics of the ecosystem. 
  
 "We're looking to see whether [climate change] might shift their migratory pattern north and whether we could lose them as apex predators [in this area], and also whether regulations as far as shark fisheries are concerned are actually working." 
  
 A report from the journal Marine Policy estimates that humans may be killing more than 100 million sharks a year. Tellman says the migration appears to contain fewer animals this year, though the cause of that is unknown. 
  
 Blacktips account for 20 percent of unprovoked shark attacks in Florida, and beachgoers are taking precautions. But blacktips are seen as being less of a threat to swimmers and surfers than tiger sharks, which sometimes prey on the blacktips. 
  
 Florida had the largest number of unprovoked shark attacks in 2012, a total of 25. None were fatal. ||||| A pod of spinner sharks is seen through a wave Tuesday morning at Midtown Beach. 
  
 By Alexandra Seltzer 
  
 Palm Beach Post Staff Writer 
  
 Two area beaches were temporarily closed today because of sharks spotted near the shore. 
  
 The waters off the Boynton Inlet were closed to swimmers for about two hours this afternoon and the South Inlet in Boca Raton was closed for about an hour, Palm Beach County Ocean Rescue Lt. Brian McManus said. |||||Summary:
– Thousands of visitors are swarming to beaches in South Florida, but not the kind welcomed by the chamber of commerce: sharks. Their annual migration up the East Coast is taking place later than usual this year, coinciding with the start of spring break season, reports ABC News. Several beaches had to close earlier this week, reports the Palm Beach Post, though all were back open as of today. Researchers at Florida Atlantic University have counted 15,000 sharks so far, most within 200 yards of shore. The most common are blacktip and spinner sharks, about 4 to 5 feet long. But it's not all gloom and doom: "The sharks are drawing attention for their natural showmanship, as well," writes Patrik Jonsson at the Christian Science Monitor. "They're often seen making spinning jumps out of the water. And thanks to the clear water and white sands of south Florida, they're easy to spot and view, especially for lifeguards from their elevated chairs."
Artikel: Tusentals hajar nära stranden är en del av en årlig migration av svartspetshajar som flyttar in i utfodringsområden nära Palm Beach, Fla. Spike i våldsbrott sprider sig till L.A., men fortfarande ingen larmklockor Hunter Mason (l.) och Olivia Murat, på vårlovet från University of Indianapolis, koppla av på stranden tisdag i Destin, Fla. Tusentals svartspetshajar borstar förbi Floridas vårlovsstränder, höja larmet bland simmare och livräddare. Tusentals svartspetshajar penslar förbi USA:s främsta vårlovsstränder, väcker larm bland simmare och badvakter men drar också ny uppmärksamhet till ett fantastiskt naturfenomen. En årlig flyttning av en distinkt population av hajar börjar utanför Floridas spets och flyttar in i ett område utanför Palm Beach i februari och mars, där hajarna samlas nära land när offshorehyllan smalnar av – en främsta plats för de små betesfiskar som hajarna livnär sig på. Hajarna drar också till sig uppmärksamhet för sin naturuppfostran. De ses ofta göra spinnhopp ur vattnet. Och tack vare det klara vattnet och den vita sanden i södra Florida är de lätta att se och se, särskilt för livräddare från sina upphöjda stolar. Under den årliga flyttningen hänger de på kusten och följer betesfisken, vilket gör dem superlätta att se, särskilt när de förs samman i en tät grupp, säger Shari Tellman, forskare vid Florida Atlantic Universitys Elasmobranch Research Laboratory, eller "hajlabbet". Ms Tellman och andra forskare har spårat hajvandringen med Cessna-flygplan sedan 2011, och försökt förstå hur klimatförändringar – specifikt varmare genomsnittliga vattentemperaturer – kan påverka migrationen och dynamiken i ekosystemet. "Vi vill se om [klimatförändringen] kan förskjuta deras migrationsmönster norrut och om vi kan förlora dem som apex-rovdjur [i detta område], och även om regleringar när det gäller hajfiske faktiskt fungerar." En rapport från tidskriften Marine Policy beräknar att människor kan döda mer än 100 miljoner hajar om året. Tellman säger att flyttningen verkar innehålla färre djur i år, även om orsaken till det är okänd. Svartspetsar står för 20 procent av de oprovocerade hajattackerna i Florida, och strandbesökare vidtar försiktighetsåtgärder. Men svartspetsar ses som mindre av ett hot mot simmare och surfare än tigerhajar, som ibland lever på svartspetsarna. Florida hade det största antalet oprovocerade hajattacker 2012, totalt 25 stycken. Inga av dem var dödliga. En kapsel spinner hajar ses genom en våg tisdag morgon på Midtown Beach. Av Alexandra Seltzer Palm Beach Post Staff Writer Två områdens stränder stängdes tillfälligt idag på grund av hajar som upptäcktes nära stranden. Vattnet utanför Boynton Inlet var stängt för simmare i ungefär två timmar i eftermiddag och South Inlet i Boca Raton var stängt i ungefär en timme, Palm Beach County Ocean Rescue Lt Brian McManus sade. ••••••••••••••••••••••
Article: Thousands of sharks near the beach are part of an annual migration of black-tip sharks moving into feeding areas near Palm Beach, Fla. Spike in violent crimes spreads to L.A., but still no alarm bells Hunter Mason (l.) and Olivia Murat, on the spring break from the University of Indianapolis, relax on the beach Tuesday in Destin, Fla. Thousands of black-tip sharks brush past Florida's spring break beaches, raising the alarm among swimmers and lifeguards. Thousands of blackhead sharks brush past America's main spring break beaches, raise alarms among swimmers and lifeguards, but also attract new attention to a fantastic natural phenomenon. An annual migration of a distinct population of sharks begins off the tip of Florida and moves into an area off Palm Beach in February and March, where the sharks gather near land as the offshore shelf narrows off—a prime location for the small grazing fish on which the sharks feed. Sharks also attract attention for their natural upbringing. They are often seen making spinning jumps out of the water. And thanks to the clear water and white sand of southern Florida, they are easy to see and see, especially for lifeguards from their raised chairs. During the annual migration, they hang on the coast and follow the baitfish, making them super easy to see, especially when brought together in a dense group, says Shari Tellman, researcher at Florida Atlantic University's Elasmobranch Research Laboratory, or "haj lab". Ms. Tellman and other scientists have been tracking the shark migration with Cessna aircraft since 2011, trying to understand how climate change – specifically warmer average water temperatures – can affect the migration and dynamics of the ecosystem. "We want to see if [climate change] can shift their migration patterns northwards and whether we can lose them as apex predators [in this area], and even if regulations in terms of shark fishing actually work." A report from Marine Policy magazine estimates that humans can kill more than 100 million sharks a year. Tellman says the move seems to contain fewer animals this year, although the reason for it is unknown. Blackheads account for 20 percent of the unprovoked shark attacks in Florida, and beachgoers take precautions. But blackheads are seen as less of a threat to swimmers and surfers than tiger sharks, who sometimes live on the blackheads. Florida had the largest number of unprovoked shark attacks in 2012, a total of 25. None of them were fatal. A capsule of spinning sharks is seen through a wave Tuesday morning at Midtown Beach. By Alexandra Seltzer Palm Beach Post Staff Writer The beaches of two areas were temporarily closed today due to sharks discovered near the beach. The water outside Boynton Inlet was closed to swimmers for about two hours this afternoon and South Inlet in Boca Raton was closed for about an hour, Palm Beach County Ocean Rescue Lt Brian McManus said. <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk>
– Tusentals besökare svärmar till stränder i södra Florida, men inte den typ som välkomnas av handelskammaren: hajar. Deras årliga inflyttning uppför östkusten sker senare än vanligt i år, vilket sammanfaller med inledningen av vårlovssäsongen, uppger ABC News. Flera stränder fick stänga tidigare i veckan, rapporterar Palm Beach Post, även om alla var tillbaka öppna från och med idag. Forskare vid Florida Atlantic University har hittills räknat till 15 000 hajar, de flesta inom 200 meter från kusten. De vanligaste är svartspets- och spinnhajar, cirka 4 till 5 fot långa. Men det är inte bara dysterhet och undergång: "Hajarna drar också till sig uppmärksamhet för sin naturuppvisning", skriver Patrik Jonsson på Christian Science Monitor. "De ses ofta göra spinning hopp ur vattnet. Och tack vare det klara vattnet och den vita sanden i södra Florida är de lätta att se och se, särskilt för livräddare från sina upphöjda stolar."
– Thousands of visitors swarm to beaches in southern Florida, but not the type welcomed by the Chamber of Commerce: sharks. Their annual migration up the east coast takes place later than usual this year, coinciding with the start of the spring break season, reports ABC News. Several beaches had to close earlier this week, the Palm Beach Post reports, although all were back open as of today. Scientists at Florida Atlantic University have so far counted to 15,000 sharks, most within 200 meters of the coast. The most common are black tip and spin sharks, about 4 to 5 feet long. But it is not just gloom and doom: "The sharks also attract attention for their nature show," says Patrik Jonsson at the Christian Science Monitor. "They are often seen making spinning jumps out of the water. And thanks to the clear water and white sand of southern Florida, they are easy to see and see, especially for lifeguards from their raised chairs."