When Humpback whales migrate along the Australian coast in their thousands, dolphins join the shoals of their large relatives. This is not an isolated case. In a recent study [1], two researchers from Griffith University in Australia searched social media and found 199 usable reports of encounters between whales and dolphins from 17 countries over a two-decade period, mainly Humpback whales (Megaptera novaeangliae) and Bottlenose dolphins (Tursiops truncatus). In most cases, the interactions can be interpreted as communal feeding, play, and harassment. The researchers conclude that interactions between these species are by no means as rare as previously thought.
(mehr …)Schlagwort: Humpback whale
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Whale and Shark whale news
#1: Long-distance swimming whale
We know so little about life in the oceans. We find that a Humpback whale (Megaptera novaeangliae) did travel from the west coast of Latin America to the east coast of Africa, i.e. more than 13,000 kilometer, an extraoridnary long migration for an individual of this species, scientists say and puzzle over what could have caused this whale to go that far — mental confusion? desperately looking for a mating partner? However, we should also envisage that this individual behaviour is not so exceptional. The long-distance swimmer has been detected thanks to a new fluke recognition software, so, more long-distant travelling conspecifics could be detected in future.
More…#2 Whale sharks (and not only them) threatened by deep-sea mining
We know so little about life in the deep sea and what will happen when the industry starts digging there. Just one example: The Sea of Cortez between the Baja California peninsula and the Mexican mainland is one of the few hotspots for whale sharks known to migrate in the Pacific and also dive in the zone around Clarion-Clipperton Island, a key area for deep-sea mining in the Pacific. Whatever happens there will have its consequences in the Sea of Cortez, 2000 kilometres to the north, where global warming is threatening marine life and posing challenges not only to the whale sharks but also to local fishermen and people who live from tourism. This is one example of why the organisation ‘The Ocean and Us’ has launched its petition ‚to call on all governments to take a firm position against deep-sea mining‘.
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animal suffering Animal welfare artisanal fisheries Batäubung Belt-and-Road-Initiative Blauhai Bosporus bottom trawl bycatch Canada Catch Welfare Plattform certification CFFA CAPE Chancay Chile China Containerhafen Don Staniford Erderwärmung escapes EU Europa Exclusive Economic Zone EEC fair-fish fair-fish database Faroe Fischereiabkommen Fischereisubventionen Fischmehl Fischöl fisheries agreements fisheries management FishEthoGroup fish meal fish oil Fish stocks Fish welfare Gesellschaft Greenpeace Humpback whale ICES ICSF Intelligenz International maritime law Invertebraten Kognition Korruption labels Lachs Lachszucht Litopenaeus vannamei Marine Protected Areas (MPA) migration mortality Mycroprotein Nervensystem North-east Atlantic Oceana Oktopoden Omega-3 Ostsee Pacific whiteleg shrimp Pakistan Panamakanal Parasiten Peru Philippines phytoplankton play Pole and line Polen Rainer Froese Raumfahrt Ray Hilborn Reducing animal suffering Salmon Sandtigerhai Schifffahrt Schottland sea lice Seawater Cube Senegal Slapp small-scale fisheries small scale fisheries stocking density Tierleid Tierschutz Tintenfische UK US Navy Venezuela Westafrika whales Whale shark Wirbellose WTO Zivilisation Zooplankton Überfischung
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