Seals shoot

The sites included beaches in six towns near where seals haul out: Provincetown, Truro, Wellfleet, Eastham, Orleans, and Chatham. In particular, she examined how many times levels of bacteria associated with fecal contamination exceeded limits for public health and triggered beach closures. About Elephant seals You may have seen (and heard) elephant seals on a beach: roaring, clumsy and (let’s face it) terrifying as they jostle for mates. These enormous, blubbery marine mammals awkwardly belly-flop around on land, but are elegantly adapted for life in the twilight zone—where they spend 90% of their at-sea time. Two distinct species, the Northern and Southern elephant seal. The seals’ whiskers act as a sort of dietary timeline, incorporating molecular signatures from various food sources as they grow. Using a technique called stable isotope analysis, the researchers can identify different signatures in a seal’s whiskers and match them to potential prey items. Seals (family Phocidae) Five types of seals spend at least some time in arctic waters: bearded seal, ringed seal, harp seal, hooded seal, and harbor seal. Bearded and ringed seals spend their entire lives in the Arctic. Hooded and harp seals spend summers in the Arctic, and harbor seals only occasionally venture north into the Arctic. New research shows Weddell seals avoid making extreme dives for prey during midday, allowing the seals to keep diving over and over without having to pause for long. This allows them to spend almost all of their time underwater, foraging under high-light conditions, which is best for visual hunters. (Michelle Shero, ©Woods Hole Oceanographic Institution) These curious, playful seals would often play with fragments of plastic netting or packing straps, catching their necks in the webbing. The plastic harness can constrict the seal's movements, killing the seal through starvation, exhaustion, or infection from deep wounds caused by the tightening material. The Return of the Seals WHOI biologist Rebecca Gast examines whether the recovered and thriving population of gray seals in Cape Cod waters has affected water quality off the beaches they frequent. However, seals appear to manipulate how glucose is transferred between maternal and fetal blood differently from all other animals studied to date and may provide insight into early intervention for human pregnancies with gestational diabetes, the article indicates. In large marine predators, foraging entails movement. Quantitative models reveal how behaviours can mediate individual movement, such that deviations from a random pattern may reveal specific search tactics or behaviour. Using locations for 52 grey seals fitted with satellite-linked recorders on Sable Island; we modeled movement as a correlated random walk (CRW) for individual animals, at two. Seals like this one photographed during the Sea Ice Physics and Ecosystem Experiment (SIPEX-II) in Antarctica, depend on sea ice to survive. They hunt for food, such as fish and krill, under the ice, and use the ice surface for rest and to have their pups. (Photo by Peter Kimball, Woods Hole Oceanographic Institution).

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