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For most marine mammal species, alloparental care is usually provided by females.
Read moreA University of Washington study arrived at this finding after analysing the reproductive patterns of the three-spine stickleback for more than a century in Alaska's Bristol Bay region.
Read moreIn a study that involved setting up different sized "buffets" of algae off the island of Mo'orea in French Polynesia, the research team also found that the fish are willing to move past this fear, straying far from their sheltered coral refuge and
Read moreIt has been known for decades that dolphins and whales have an advanced mode of communication—distinctive whistles and clicks that express excitement, happiness, anxiety or separation from a group.
The Arctic sea ice loss has altered the annual migration of some populations of beluga whales in Alaska, causing them to delay it by as long as a month, according to a study by University of Washington.
Read moreThe animal would arch its back, raise its snout, depress its pectoral fins and swim toward the offending diver with exaggerated horizontal swimming movements, sometimes rolling or looping in a spiral.
Read moreA study by researchers from University of Milano-Bicocca describes observations of adults carrying dead calves and juveniles in 7 toothed cetaceans (odontocetes). The observation was based on 14 events from 3 oceans.
Read moreA difficulty in obtaining information about the natural behaviour of wild animals is that detailed observations of the activities of different individuals is necessary over long periods of time, and this is especially hard to achieve with sharks.
Read moreFor the first time, affectionate behaviour in a shark has been documented. Jim Abernethy, of Palm Beach in Florida, filmed his reunion with a tiger shark after a separation of two years.
Read moreThey exhibited no signs of having been beached. Instead, they swam around and frolicked amongst themselves.
Read moreThis was the conclusion by two scientists at the American Museum of Natural History, after computing the caloric energy derived from the terrestrial food sources and incorporating this with their research.
Read moreIn many cases stock assessment is based on fishery-dependent data generated from fish markets or creel surveys. The assumption is: the lower the catches in a certain unit of time, the smaller the stock of fish should be.
Read moreResearching the intelligence of the grey bamboo shark a team of researchers at Rheinische Friedrich-Wilhelms-University in Bonn, Germany showed that sharks could be trained to recognise and remember shapes for an extended period of time.
Read moreThe negative effects of anthropogenic noise on marine mammals can be pronounced, such as lethal whale strandings coinciding with exposure to military sonar.
Read moreShark Tales, in X-ray Magazine's last issue, #63, focused on pain in fish and sharks, and included a short piece on mating behaviour.
Read moreSea turtles have evolved a set of defenses against sharks, using their unusual shape, and their ability to flexibly change direction to evade these efficient predators. In this case, a tiger shark is shown attacking a sea turtle.
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