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deleon6878

The Earth Life Web, the Fish Eye and Sight in Fish - 0 views

www.earthlife.net/sight.html

shared by deleon6878 on 14 Nov 14 - No Cached
  • For sharks and Rays this is not a problem as they do not have color vision anyway. The eyes of shallow water species are adapted to have a maximum sensitivity to light of around 500 nanometres, and the eyes of those species that live in deeper waters are adapted to 475-480 nanometres. Most Teleost fish however have color vision, and the eyes of the Trout (Onkorhynchus mykiss) have three sensitivity peaks at, 455, 530 and 625 nanometres.
    • deleon6878
      deleon6878 on 14 Nov 14
       
      Sharks and Rays are color blind so they don't care about how deep they go cause the deeper you go the less color you see, the fish,sharks,rays,etc that live deeper in the ocean they used to 475-480 nanometers 
    • deleon6878
      deleon6878 on 14 Nov 14
       
      However teleost fish have color vision and the trout have three sensitivity limits at, 455, 530 and 625nanometers so they can see the colors in the water if they go deeper they would not see anything 
deleon6878

BrainPOP | Gills - 0 views

www.brainpop.com/...gills

brainpop fish gills

shared by deleon6878 on 04 Nov 14 - No Cached
    • deleon6878
      deleon6878 on 04 Nov 14
       
      Inside the fish theres something called the lamellae (The lamellae is an organ that the fish has to help it breathe.) and theres tiny blood cells and theres a blood vessel that bring the blood really close to the surface. When water goes into the gills,oxygen goes to the fish. When blood carries oxygen to the lamellae it doesn't have a lot of oxygen. Blood swims through the blood vessels and water swims the opposite way to the lamellae. That way, blood swims through the gills but it was a little less oxygen than the water around it. When the blood can't hold any more oxygen it swims its way to the heart.  
    • deleon6878
      deleon6878 on 10 Nov 14
       
      To get oxygen the fish just moves with their mouth open or take a gulp of water  
    • deleon6878
      deleon6878 on 10 Nov 14
       
      The bigger the lamellae is the better blood can hit contact with water and the fish can get more oxygen
    • deleon6878
      deleon6878 on 10 Nov 14
       
      The lamellae has evolved so much to have the most surface area it can have 
deleon6878

instaGrok - 0 views

www.instagrok.com/results.html

fish and other wacky stuff about their gills

shared by deleon6878 on 31 Oct 14 - No Cached
  • fish and gills
    • deleon6878
      deleon6878 on 07 Nov 14
       
      Blood moves to the gills and their surface and its lamellae. ("The lamellae is the most important part of the gills since this is where gas exchange actually takes place. Fish have 2 ways of getting their oxygen full "that is diffused by the gills  
lopez5891

Dolphin - Wikipedia, the free encyclopedia - 0 views

en.wikipedia.org/Dolphin

Animals related to Dolphins

shared by lopez5891 on 03 Nov 14 - Cached
  • Dolphins are cetacean mammals closely related to whales and porpoises. There are almost forty species of dolphin in 17 genera. They vary in size from 1.2 m (4 ft) and 40 kg (90 lb) (Maui's dolphin), up to 9.5 m (30 ft) and 10 tonnes (9.8 long tons; 11 short tons) (the orca or killer whale). They are found worldwide, mostly in the shallower seas of the continental shelves and are carnivores, eating mostly fish and squid. The family Delphinidae, the largest in the order Cetacea, evolved relatively recently, about ten million years ago during the Miocene.
deleon6878

How do fish breathe under water? | Ask.com - 0 views

www.ask.com/...e-under-water-ef265177bb1680b7

shared by deleon6878 on 31 Oct 14 - No Cached
  • The oxygen that fish and other animals with gills use is bonded to hydrogen molecules and is dissolved in the water.
deleon6878

My Library - 0 views

www.diigo.com/deleon6878

fish Facts

shared by deleon6878 on 31 Oct 14 - No Cached
  • For sharks and Rays this is not a problem as they do not have color vision anyway. The eyes of shallow water species are adapted to have a maximum sensitivity to light of around 500 nanometres, and the eyes of those species that live in deeper waters are adapted to 475-480 nanometres. Most Teleost fish however have color vision, and the eyes of the Trout (Onkorhynchus mykiss) have three sensitivity peaks at, 455, 530 and 625 nanometres.
Eugenio Ferrara

Why can't penguins fly? - Science Questions | HighlightsKids.com - 0 views

www.highlightskids.com/...why-cant-penguins-fly

pinguins

shared by Eugenio Ferrara on 31 Oct 14 - No Cached
  • A penguin’s body isn’t designed to fly. Its wings are too short and stubby. But as you say, they work just fine for swimming. A number of other birds, including the ostrich, can’t fly either
    • Eugenio Ferrara
      Eugenio Ferrara on 04 Nov 14
       
      the penguins wings are designed to swim their are too fat and short for them to fly
    • Eugenio Ferrara
      Eugenio Ferrara on 04 Nov 14
       
      for the penguins swiming and catching fish is more inportant
lopez5891

What do Dolphins Eat? - Dolphin Facts and Information - 0 views

www.dolphins-world.com/what-do-dolphins-eat

dolphin Food

shared by lopez5891 on 03 Nov 14 - No Cached
  • While some dolphins eat fishes like herring, cod or mackerel, some others eat squids.
    • lopez5891
      lopez5891 on 04 Nov 14
       
      Dolphins eat small animals, and I think that what they d lis really good because if they ate more bigger animals they would start to be endengared. Because the more little they are, the more number of animals they are.
  • Even more, large dolphins like the killer whales, eat some other marine mammals like seals or sea lions and sometime even turtles.
Eugenio Ferrara

Journey North Bald Eagles - 0 views

www.learner.org/...EagleFlightLesson.html

shared by Eugenio Ferrara on 11 Nov 14 - No Cached
    • Eugenio Ferrara
      Eugenio Ferrara on 11 Nov 14
       
      Eagles have very big wings they can carry their big body and some fish.
  • It takes a lot of energy to flap such large wings, just like it's a lot of work running with a large kite until it takes off!
    • Eugenio Ferrara
      Eugenio Ferrara on 11 Nov 14
       
      all eagles have trouble flapping that bi giant wings they need a lot of sterngth and energie 
garzat5774

How birds fly | Sciencelearn Hub - 0 views

sciencelearn.org.nz/...How-birds-fly

birds

shared by garzat5774 on 03 Dec 14 - No Cached
  • Birds have many physical features, besides wings, that work together to enable them to fly. They need lightweight, streamlined, rigid structures for flight. The four forces of flight – weight, lift, drag and thrust – affect the flight of birds.
  • Flying birds have: lightweight, smooth feathers – this reduces the forces of weight and drag a beak, instead of heavy, bony jaws and teeth – this reduces the force of weight an enlarged breastbone called a sternum for flight muscle attachment – this helps with the force of thrust light bones – a bird’s bones are basically hollow with air sacs and thin, tiny cross pieces to make bones stronger – this reduces the force of weight a rigid skeleton to provide firm attachments for powerful flight muscles – this helps with the force of thrust a streamlined body – this helps reduce the force of drag wings – these enable the force of lift.
  • WingsThe shape of a bird’s wing is important for producing lift. The increased speed over a curved, larger wing area creates a longer path of air. This means the air is moving more quickly over the top surface of the wing, reducing air pressure on the top of the wing and creating lift. Also, the angle of the wing (tilted) deflects air downwards, causing a reaction force in the opposite direction and creating lift.Larger wings produce greater lift than smaller wings. So smaller-winged birds (and planes) need to fly faster to maintain the same lift as those with larger wings.Wing loading tells you how fast a bird or plane must fly to be able to maintain lift: wing loading = weight/wing area (kilograms per square metre).A smaller wing loading number means the bird/plane can fly more slowly while still maintaining lift and is more manoeuvrable.
  • ...7 more annotations...
  • GlidingWhen a bird is gliding, it doesn’t have to do any work. The wings are held out to the side of the body and do not flap. As the wings move through the air, they are held at a slight angle, which deflects the air downwards and causes a reaction in the opposite direction, which is lift. But there is also drag (air resistance) on the bird’s body, so every now and then, the bird has to tilt forward and go into a slight dive so that it can maintain forward speed.
  • SoaringSoaring flight is a special kind of glide in which the bird flies in a rising air current (called a thermal). Because the air is rising, the bird can maintain its height relative to the ground. The albatross uses this type of soaring to support its multi-year voyages at sea.
  • FlappingBirds’ wings flap with an up-and-down motion. This propels them forward. The entire wingspan has to be at the right angle of attack, which means the wings have to twist (and do so automatically) with each downward stroke to keep aligned with the direction of travel.
  • Birds obtain thrust by using their strong muscles and flapping their wings. Some birds may use gravity (for example, jumping from a tree) to give them forward thrust for flight. Others may use a running take-off from the ground.
  • Different birds have different adaptive features to meet their flight needs: Some birds are small and can manipulate their wings and tail to manoeuvre easily, such as the fantail (pīwakawaka). The hawk, with its large wingspan, is capable of speed and soaring. Gannets and seabirds are streamlined to dive at high speeds into the ocean for fish. Godwits, although small, are equipped to fly long distances.
    • garzat5774
      garzat5774 on 03 Dec 14
       
      birds have some chacteristics that help them fly, birds are light weighted they have light feathers insted of heavy ones that add more weight to their bodys, they also have a beak insted of jaws that also add weight to their boddys, thay have hollow bones in their body that means that the bone has nothing inside it
    • garzat5774
      garzat5774 on 03 Dec 14
       
      birds get ready to fly by flapping their wings, some birds use "gravity" to take of some run and they jump just like an airplane and others jump from a tree and then start flapping their winds
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