Archiwa kategorii: Łukasz

Hammerhead Shark

Fast Facts

  •  Size: 4 to 6 m
  • Weight: 230 to 450 kg
  • Average life span in the wild: 20 to 30 years

The Perfect Predator

Hammerhead sharks are consummate predators that use their oddly shaped heads to improve their ability to find prey. Their wide-set eyes give them a better visual range than most other sharks. And by spreading their highly specialized sensory organs over their wide, mallet-shaped head, they can more thoroughly scan the ocean for food.

Little Ones And The Big Ones

Most hammerhead species are fairly small and are considered harmless to humans. Illustration: Hammerhead shark compared with adult manHowever, the great hammerhead’s enormous size and fierceness make it potentially dangerous, though few attacks have been recorded. The great hammerhead is the largest of the nine identified species of this shark. It can grow up to 20 feet (6 meters) in length and weigh up to 1,000 pounds (450 kg), although smaller sizes are more common.

Shark With A Radar

One group of sensory organs is the ampullae of Lorenzini, which allows sharks to detect, among other things, the electrical fields created by prey animals. The hammerhead’s increased ampullae sensitivity allows it to find its favorite meal, stingrays, which usually bury themselves under the sand.

 

 

 

 

Giant Squid

Shortly About The Squid

Giant squid can grow to a tremendous size due to deep-sea gigantism recent estimates put the maximum size at 13 m for females Kałamarnica-kałamarnice-1and 10 m for males from the posterior fins to the tip of the two long tentacles estimated 14 m. The giant squid remains largely a mystery to scientists despite being the biggest invertebrate on Earth. The largest of these elusive giants ever found measured 59 feet (18 meters) in length and weighed nearly a ton (900 kilograms).

Hidden Giant

However, their inhospitable deep-sea habitat has made them uniquely difficult to study, and almost everything scientists know about them is from carcasses that have washed up on beaches or been hauled in by fishermen. Lately, however, the fortunes of scientists studying these elusive creatures have begun to turn. In 2004 researchers in Japan took the first images ever of a live giant squid. And in late 2006, scientists with Japan’s National Science Museum caught and brought to the surface a live 24-foot (7-meter) female giant squid. Scientists don’t know enough about these beasts to say for sure what their range is, giant-squid_544_600x450but giant squid carcasses have been found in all of the world’s oceans.

Those Eyes !

Goko-florydaiant squid, along with their cousin, the colossal squid, have the largest eyes in the animal kingdom, measuring some 10 inches (25 centimeters) in diameter. These massive organs allow them to detect objects in the lightless depths where most other animals would see nothing.

Invertebrate Diet

Like other squid species, they have eight arms and two longer feeding tentacles that help them bring food to their beak-like mouths. Their diet likely consists of fish, shrimp, and other squid, and some suggest they might even attack and eat small whales.

Organic Driving Gear

They maneuver their massive bodies with fins that seem diminutive for their size. They use their funnel as a propulsion system, drawing water into the mantle, or main part of the body, and forcing it out the back.

Flying Fish

Introduction

tumblr_lww5ana3G01r94dcmo1_1280Flying fish can be seen jumping out of warm ocean waters worldwide. Their streamlined torpedo shape helps them gather enough underwater speed to break the surface, and their large, wing-like pectoral fins get them airborne.

How Those Fishes Flyies ?

The process of taking flight, or gliding, begins by gaining great velocity underwater, about 37 miles (60 kilometers) per hour. Angling upward, the four-winged flying fish breaks the surface and begins to taxi by rapidly beating its tail while it is still beneath the surface. It then takes to the air, sometimes reaching heights over 4 feet (1.2 meters) and gliding long distances, up to 655 feet (200 meters). Once it nears the surface again, it can flap its tail and taxi without fully returning to the water. Capable of continuing its flight in such a manner, flying fish have been recorded stretching out their flights with consecutive glides spanning distances up to 1,312 feet (400 meters).

Species of Flying Fish

flying-fish_526_600x450There are about 40 known species of flying fish. Beyond their useful pectoral fins, all have unevenly forked tails, with the lower lobe longer than the upper lobe. Many species have enlarged pelvic fins as well and are known as four-winged flying fish.

Life of Fish

Flying fish are attracted to light, like a number of sea creatures, and fishermen take 1280px-Pink-wing_flying_fishadvantage of this with substantial results. Canoes, filled with enough water to sustain fish, but not enough to allow them to propel themselves out, are affixed with a luring light at night to capture flying fish by the dozens. There is currently no protection status on these animals.

 

 

Narwhal

  Narwhals_breachIntroduction

The narwhal, is a medium-sized toothed whale and possesses a large „tusk” from a protruding canine tooth. It lives year-round in the Arctic waters around Greenland, Canada, and Russia.

Unicorn of the seaHI_232821_Paul_Nicklen_National_Geographic_Stock_WWF_Canada

The narwhal is the unicorn of the sea, a pale-colored porpoise found in Arctic coastal waters and rivers. These legendary animals have two teeth. In males, the more prominent tooth grows into a swordlike, spiral tusk up to 2.7 meters long. The ivory tusk tooth grows right through the narwhal’s upper lip. Scientists are not certain of the tusk’s purpose, but some believe it is prominent in mating rituals, perhaps used to impress females or to battle rival suitors. Females sometimes grow a small tusk of their own, but it does not become as prominent as the male’s.

Narwhal travels

4Narwhals are related to bottlenose dolphins, belugas, harbor porpoises, and orcas. Like some other porpoises, they travel in groups and feed on fish, shrimp, squid, and other aquatic fare. They are often sighted swimming in groups of 15 to 20, but gatherings of hundreds or even several thousand narwhals have been reported. Sometimes these groups become trapped by shifting pack ice and fall victim to Inuit hunters, polar bears, or walruses.

Why people hunt for narwhals ?

o-NARWHAL-facebookInuit people hunt the narwhal for their long tusks and their skin, an important source of vitamin C in the traditional Arctic diet. They are allowed to hunt this whale species legally for subsistence. Narwhals have been extensively hunted the same way as other sea mammals, such as seals and whales, for its large quantities of fat which are one of the most important resources of the native people in Arctic regions. Almost all parts of the narwhal, meat, skin, blubber and organs are consumed.

Portuguese man o’ war

Why „Man o’ war” ?

The name „man o’ war” comes from the man-of-war, an 18th-century armed sailing ship,and the cnidarian’s supposed resemblance to the Portuguese version at full sail. In other languages it is simply known as the ‚Portuguese war-ship.

Not a Jellyfish ?

giant06-man-o-war_17455_990x742 Anyone unfamiliar with the biology of the venomous Portuguese man-of-war would likely mistake it for a jellyfish. Not only is it not a jellyfish, it’s not even an „it,” but a „they.” The Portuguese man-of-war is a siphonophore, an animal made up of a colony of organisms working together.

The longest colony on the world

The tentacles are the man-of-war’s second organism. These long, thin tendrils can extend 165 feet (50 meters) in length below the surface, although 30 feet (10 meters) is more thexxport-1average. They are covered in venom-filled nematocysts used to paralyze and kill fish and other small creatures.

Deadly Venom

This species and the smaller Indo-Pacific man o’ war are responsible for up to 10,000 human stings in Australia each summer, particularly on the east coast, with some others occurring off the coast of South Australia and Western Australia. For humans, a man-of-war sting is excruciatingly painful, but rarely deadly. But beware—even dead man-of-wars washed up on shore can deliver a sting.

Real Portuguese sailor

640px-Portuguese_Man-O-War_(Physalia_physalis)Man-of-wars are found, sometimes in groups of 1,000 or more, floating in warm waters throughout the world’s oceans. They have no independent means of propulsion and either drift on the currents or catch the wind with their pneumatophores. To avoid threats on the surface, they can deflate their air bags and briefly submerge.

Sailfish

Introduction

9546-050-42565668Sailfish are a genus Istiophorus of billfish living in warmer sections of all the oceans of the world. They are predominately blue to gray in colour and have a characteristic erectile dorsal fin known as a sail, which often stretches the entire length of the back. Another notable characteristic is the elongated bill, resembling that of the swordfish and other marlins. They are therefore described as billfish in sport-fishing circles.

Species

Two sailfish species have traditionally been recognized.sailfish-mexico

-Atlantic sailfish                                                   -Indo-Pacific sailfish

Description

Sailfish grow quickly, reaching 1.2–1.5 m in length in a single year, and feed on the surface or at middle depths on smallerpelagic forage fish and squid. Individuals have been clocked at speeds up to 110 km/h, which is one of the highest speeds reliably reported in any water organism. Generally, sailfish do not grow to more than 3 m  in length and rarely weigh over 90 kg.

Pacific-sailfishSail

Its shape resembles a large sail, hence the common name of the species. Fin may be made by the fish back in the oblong hole. During the fight it is rigidly set, sometimes issued over the water surface.

Sperm Whale

Introduction

The sperm whale (Physeter macrocephalus), or cachalot, is the largest of the toothed whales and the largest toothed predator. It is the only living member of genus Physeter, and one of three extant species in the sperm whale family.

Sizekaszalot 3

The sperm whale is the largest toothed whale, with adult males measuring up to 20.5 metres long and weighing up to 57,000 kilograms. By contrast, the second largest toothed whale, Baird’s Beaked Whale measures 12.8 metres (42 ft) and weighs up to 14,000 kg.

Diet

Sperm whales usually dive between 300 to 800 metres , and sometimes 1–2 kilometres to search for food. Such dives can last more than an hour. They feed on several species, notably the giant squid, but also the larger colossal squid, octopuses, and diverse fish like demersal rays, but the main part of their diet consists of medium-sized squid. Some prey may be taken incidentally while eating other items.

kaszalot 1Teeth

The sperm whale’s lower jaw is very narrow and underslung. The sperm whale has 18 to 26 teeth on each side of its lower jaw which fit into sockets in the upper jaw. The teeth are cone-shaped and weigh up to 1 kilogram (2.2 lb) each. The teeth are functional, but do not appear to be necessary for capturing or eating squid, as well-fed animals have been found without teeth or even with deformed jaws.

Existence

Sperm whales live in oceans and most seasOften in areas of giant squidWater prefertropical and subtropical zonesAdult males go on the journey to the polar zonesIn the 1980s,   3/4 of the population of sperm whales dwelled in the southern hemispher .

Brain

The brain is the largest known of any modern or extinct animal, weighing on average about 7.8 kilograms, more than five times heavier than a human’s, and has a volume of kaszalot 2about 8,000 cm3. Although larger brains generally correlate with higher intelligence, it is not the only factor. Elephants and dolphins also have larger brains than humans.

Day 13 – Grand Canyon National Park

After a walk in Las Vegas we wanted very much to go to the largest Canyon in the worldtheGrand Canyon National ParkTo get there we had to ride in the car about 9 hours

After reaching the placewe have read with the mapand we plan to explore this wonderfulplaceAt the beginning we went to the place from which yocan watch the entire Canyon.When I approached I saw the fault about kilometre down and at the end was River Colorado

Then walked around the edge of the Canyonlooking at viewwho represented Canyon.During this we went to several stores to buy something to drinkUnfortunatelydue to the every long journey we didn’t see as much as we wanted, but still according to me was brilliant.

Day 12 – Las Vegas

_DSC7643After passage through the Valley of death we went to Las VegasIt’s a huge city and also thecapital of gamblingwhich the whole world knows
When we drove into the city we looked at where we had to spend two daysAfterpodjechaniat the door we have received the keys and we went to the room to unpack andprepare for trips to the main street in Las Vegas
When the dusk sets out for a walk,because we wanted to see the neon signs and lights thatbeautifully looked after duskDuring the trip we saw in the shape of a castlethe towers ofthe Eiffel Towerthe statue of liberty and the largest hotel in the United States-GrandHotelAs I walked through the streetadmired the architecture in this beautiful city

That day there were few things to describe, but it was worth itAnd so ended up tiring day inLas Vegas._DSC7689_DSC7709