The cookie cutter shark (Isistius brasiliensis) is as fearless as they come! This small, 20-inch shark can take on giants like whales and larger sharks, and have even been known to mistakenly try to bite submarines. They dwell in the deep warm ocean and come closer to the surface as the sun sets to grab a quick snack off their unsuspecting prey. Cookie cutter sharks approach their victims from below, latch on with their suction cup style lips, bite and then twist (below). A nice, round hole is left as a souvenir. They get this easy meal by tricking other ocean residents with their distinctive brown collar, which may act as a lure that allows the cookie cutter shark to be seen as a smaller, not-so-scary fish. As frightening as they seem, the ...

The southern black racer (Coluber constrictor priapus) is a non-venomous American snake that is very active during the day. This may explain why it was spotted winding its way through a wire fence.

Scans have shown that babies' brains reach more than half their adult size in the first three months of life.

Source: http://archneur.jamanetwork.com/article.aspx?articleid=1893442

A six-metre tall boulder that bounced down a slope on Mars has left a mark visible from space. NASA's Mars Reconnaissance Orbiter took a snapshot of the 500-metre long trail in July.

Here's a good reminder of how enormous elephants are - this one's using a Volkswagen as a scratching post. Photographed in South Africa, the elephant was in musth, which is a sexually aggressive period experienced by elephant bulls once a year.

Elafonisi Beach on the Greek island of Crete has pastel pink sand! That rosy hue is caused by tiny particles of pink shells and coral that have been ground down over many years of erosion.

Say hello to the Blackberry Passport. This killer phone sports a huge 4.5 inch 1440x1440 LCD display, massive 3450 mAH battery, and a capacitive touch keyboard. According to its makers, the phone's resolution is perfect for seeing images accurately, and any doctor who wants to look at detailed x-rays on their smartphone couldn’t do any better than the device’s 4.5-inch screen.