alt = A statue of young Lincoln sitting on a stump, holding a book open on his lap

alt = Head shot of older, clean shaven Lincoln

alt = A dark-haired, bearded, middle-aged man holding documents is seated among seven other men.

alt = Photo of surf breaking on rocky shore

alt = Map displaying a looping line with arrows indicating that water flows eastward in the far Southern ocean, angling north east of Australia, turning sough after passing Alaska, then crossing the mid-Pacific to flow north of Australia, continuing west below Africa, then turning northwest until reaching eastern Canada, then angling east to southern Europe, then finally turning south just below Greenland and flowing down the Americas ' eastern coast, and resuming its flow eastward to complete the circle

alt = Map showing 5 circles.

alt = Map of Caribbean showing seven approximately parallel westward-pointing arrows that extend from east of the Virgin Islands to Cuba.

alt = Animation showing the continents separating from a single mass, making creating the Atlantic in the process

alt = Animation of audio, AM and FM sine waves

alt = Apollo program insignia

alt = Astronaut Buzz Aldrin stands on the Moon

alt = President John F. Kennedy addresses a joint session of Congress, with Vice President Lyndon B. Johnson and House Speaker Sam Rayburn seated behind him

alt = Black-and-white photograph of a statue consisting of an inscribed, round pedestal on top of which sits a seated, nude, male figure of which only the legs and lower torso are preserved

alt = Tapestry image of a man on horseback holding a falcon

alt = Tapestry image of a procession of men carrying a coffin heading towards a church building.

alt = Coin image of a crowned male head with a sceptre in the background

Image: AcropolisatathensSitePlan. png | right | 600px | alt = Site plan of the Acropolis at Athens

alt = Diagram showing video signal amplitude against time.

alt = This article incorporates public domain material Bulgaria country profile ( October 2006 ) from websites or documents of the Library of Congress Federal Research Division.

alt = Black-and-white picture of heavy machinery with two operators sitting aside

alt = Graphs showing similar elution curves ( metal amount vs drops ) for ( top vs bottom ) terbium vs berkelium, gadolinium vs curium, europium vs americium

alt = Sequential layers of spheres arranged from top to bottom: GRGBGRGB ( G = green, R = red, B = blue )

alt = Drawing of walrus skeleton

alt = Drawing of walrus, and square-headed men, both perched on rocks, with ocean and cliffs in background

alt = Drawing comparing sizes of Megalodon, great white shark and a man, Megalodon is 18m long and great white 6m.

alt = Drawing of shark head.

alt = Drawing of long mouth with lips retracted to expose triangular, pitted teeth spaced so uppers fit between lowers

alt = Drawing of a handsome building with a bell tower and a wing on each side.

alt = Drawing of trees with orange and red leaves with a lake at the bottom and hills in the distance.

alt = Drawing of shark with prominent, all white-tipped fins

alt = Drawing of head, mouth, gills, and pectoral fin of shark drawn from below with many smaller fish in background

alt = Drawing of wrasse profile showing eye, lips, and teeth

alt = Drawing of long, thin fish with two matching pairs of top and bottom fins

alt = Drawing showing a road with buildings either side and a trench down the middle.

alt = Drawing of a handsome building with a bell tower and a wing on each side.

alt = Drawing of fish with open mouth, bent body and stones in background

alt = Drawing of man's head, turned to the right, with curly dark hair.

alt = Drawing showing divisions according to depth and distance from shore

alt = Drawing of a large country house with wings

alt = Drawing of bearded man in medieval Arabic clothing.

alt = The serrated teeth of a tiger shark, used for sawing through flesh

alt = Photo showing claspers of bottom-resting shark.

alt = Photo of shark next to boat

alt = Photo of shark

alt = Video of shark swimming at the surface towards cage

alt = Profile photo of shark, accompanied by remora, swimming just above a sandy seafloor

alt = Photo of shark with black and white-striped fish

alt = Photo of shark swimming next to large, brightly-colored coral head

alt = Photo of long-finned shark, swimming

alt = Photo of shark in twilit waters with coral head in background