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Humpback whales (Megaptera novaeangliae) manufacture bubble-nets as tools to increase prey intake

NEWS - Humpback whales ( Megaptera novaeangliae ) create bubble net tools while foraging, consisting of internal tangential rings, and actively control the number of rings, their size, depth and horizontal spacing between the surrounding bubbles. These structural elements of the net increase prey intake sevenfold. Researchers have known that humpback whales create “bubble nets” for hunting, but the new report shows that the animals also manipulate them in a variety of ways to maximize catches. The behavior places humpbacks among the rare animals that make and use their own tools. “Many animals use tools to help them find food, but very few actually make or modify these tools themselves,” said Lars Bejder, director of the Marine Mammal Research Program (MMRP), University of Hawaii at Manoa. “Humpback whales in southeast Alaska create elaborate bubble nets to catch krill. They skillfully blow bubbles in patterns that form a web with internal rings. They actively control details such ...

Pink trumpet tree (Tabebuia heterophylla)

Pink trumpet tree ( Tabebuia heterophylla ) is a species of plant in the Bignoniaceae family, growing 6–9 meters tall with a cylindrical trunk and brown bark that is often linearly fissured. The leaves are opposite, compound, with five or fewer minor leaflets. T. heterophylla has striking bright red flowers, tubular, five-lobed, and 5–7.5 cm long. The fruit is a cylindrical pod, up to 20 cm long and up to 1 cm wide. The pod stalk is up to 3 cm long. The pod splits along two lines to release numerous thin, light brown seeds, 0.5–2.5 cm long with two white wings. This species is often used as a street tree and shade tree for residential properties. Kingdom: Plantae Phylum: Tracheophyta Subphylum: Angiospermae Class: Magnoliopsida Order: Lamiales Family: Bignoniaceae Genus: Tabebuia Species: Tabebuia heterophylla

Pack a backpack

Often some hiking hobbyists ignore the right way of packing supplies, they carelessly put items into backpacks causing food supplies to be destroyed, survival equipment damaged even the most fatal event is that portable stove tubes leak due to being hit from above. The advantage of packing properly is that supplies are not damaged, easily taken if needed, and facilitates movement. The first thing to consider before packing is to make a list of items to be taken, sort items and put them in plastic bags. Everyone's comfort may vary and there is no definite formula in packing, but most hiking hobbyists have a similar order of packing. Correct packing includes distributing the load evenly. So how is the order of packing correct? The following tips: Slepping bag and clothes at bottom Slepping bag and clothes at the lowest position where the bottom of the backpack rests directly on the waist. Soft items will make the waist not hurt. Slepping bag and clothes are also used most re...

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