About the ocean
Scientists invented the SharkCam, a radio-controlled submarine (underwater drone), to get close to and study man-eating Great White Sharks.
SharkCam: As close as you'll ever get to man-eating sharks
The great white shark suddenly jumps into the video frame and bites the camera.
Great white sharks fiercely attacking their prey was captured on the so-called SharkCam off of Guadalupe Island, Baja California, Mexico by scientists from the Woods Hole Oceanographic Institute.
The SharkCam is actually an unmanned radio-controlled submarine with several cameras pointing in different directions.
The cameras gave scientists a close-up panoramic view of sharks in the wild, in their natural habitat.
The actual shark footage begins about one minute into the video with the SharkCam following the shark from behind with the shark tail visible and moving back and forth.
But the hunter soon became the hunted.
At first, the shark swims around the camera and appears to be checking it out.
Suddenly, the shark jumps up from below the camera and bites the SharkCam and holds it in its teeth.
After unsuccessfully trying to wedge his teeth into the SharkCam, the shark swims away.
Next the shark is swimming at high speed directly at the camera and suddenly rams the SharkCam with his nose bouncing off in the process.
And the sound of the shark trying to bite the camera is heard while the camera captures the shark's body moving back and forth as the shark exerts itself.
Some sharks also displayed signs of territorial behaviour towards the SharkCam.
As the shark makes threatening motions and even hits the SharkCam to drive away the SharkCam.
In what are most likely predatory attacks, sharks take advantage of the clear water to lurk in the darkness below the vehicle, then swim up suddenly and bite the SharkCam on the tail or middle part. This is the same way sharks hunt seals in the area. (at 3:10 in the video)
The Sharkcam is specially equipped to locate, track, and film up-close a tagged marine animal, such as a great white shark. The underwater vehicle is programmed to home in on a signal from a radio beacon attached to the shark at depths up to 100 meters.
There are also plans to use the system to follow other large marine animals such as sea turtles. Visual and numerical data from the vehicle allow scientists to study the behavior of marine animals in the wild interacting with their natural habitat.
actually: used for stressing what is really true or what really happened - ตามความเป็นจริง
appear: to seem - ดูเหมือนจะ, ดูเหมือนว่า
beacon: a radio station or device whose signal helps ships and aircraft to find their position - เครื่องบอกตำแหน่ง
behavior: the way that someone acts or behaves - พฤติกรรม, การกระทำตัว
capture: to film/record/paint, etc. somebody/something - เก็บภาพ, จับภาพ
check out: look at something to see what it is and whether they are interested in it -
clear: can see through it, like a glass window - ใส
close-up: a photo taken very close to a person's face -
depths: a place that is very far or deep inside an area or very far away - ส่วนที่ลึกที่สุด
direction: the way something is moving or coming from - ทิศทาง
display: to show signs of something, especially a quality or feeling - แสดง
drive away: cause someone to escape - ขับไล่ไปให้พ้น
equipped: having what is necessary to do something - ครบครัน, ซึ่งมีเครื่องประกอบพร้อม
exert: to put force or physical pressure on something - ออกแรง
fiercely: very strongly - อย่างรุนแรง, อย่างดุเดือด
footage: film of a particular subject or event - ฟิลม์หรือคลิปภาพยนตร์
habitat: the type of place that a particular animal usually lives in or a particular plant usually grows in - ถิ่นที่อยู่ของพืชหรือสัตว์
home in on: to find a radio signal and find out where it is coming from and then maybe go to that place -
hunt: to look for somebody in order to catch them or harm them; to chase wild animals or birds in order to catch or kill them for food, sport or to make money - ตามหา, ล่า
institute: an organization that has a particular purpose, especially one that is connected with education or a particular profession; the building used by this organisation - สถาบัน,องค์การ,วิทยาลัย,สถาบันหนึ่งของมหาวิทยาลัย
locate: to find where someone or something is - หาทำเล,หาที่ตั้ง
lurk: to wait, sometimes hiding, in order to frighten, annoy, or attack someone - หลบ, ซ่อน, เดินลับๆล่อๆ
marine: relating to the sea and creatures that live in it - เกี่ยวกับทะเล
motion: movement - การเคลื่อนไหว
natural: existing in nature; not made or caused by humans - เป็นธรรมชาติ, ตามธรรมชาติ
panoramic: a very wide view that allows you to see more of the area around you - กล้องถ่ายภาพกว้างราว140องศา
predatory: living by killing and eating other animals; taking advantage of a situation in a clever or forceful way - ที่กินสัตว์อื่นเป็นอาหาร. ที่ปล้นหรือขโมยมา
prey: to be a victim of something - เหยื่อ
ram: to hit or push something with force - กระแทก
sign: a piece of evidence that something is happening or that something exists - ร่องรอย
signal: a mobile phone, TV or radio transmission -
so-called: used for saying that a particular word is usually used for referring to someone or something - ที่เป็นที่รู้กัน
submarine: a ship that can travel underwater - เรือดำน้ำ
suddenly: quickly and unexpectedly - อย่างกะทันหัน
tagged: an animal with a special tag placed on it that send out a radio signal so people can find the animal -
tail: the long thing with bone in it on the back of animals - หาง (สัตว์)
take advantage of: to use something to get some benefit or "advantage" from -
threaten: to say or indicate that you might do something bad or harmful, especially in order to make someone do something - ขู่เข็ญ คุกคาม ทำให้กลัว
track: to follow the development or progress of something - ติดตาม
unmanned: (of a machine, a vehicle, a place or an activity) not having or needing a person to control or operate it - ซึ่งไม่มีคนคอยควบคุม
up-close: very near a person or thing -
vehicle: a machine that you travel in or on, especially one with an engine that travels on roads, e.g., a car, bus, van, truck, etc. - ยานพาหนะ
visible: able to be seen - ที่มองเห็นได้
wedge: to put or squeeze something tightly into a narrow space, so that it cannot move easily - บีบอัด
wild: growing in the forest or other natural place; not planted, grown or raised by humans - ไม่เชื่อง
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