As the first full moon of winter arrives, hundreds of thousands of them emerge from the darkness and march across the seabed like an army.
This is the extraordinary moment the spider crabs' annual invasion of the Mornington Peninsula in south east Australia begins
Once a year, the crustaceans move en-masse across the bay's sandy bottom, clambering over one another to create mounds nearly 100 metres long in order to moult so they can grow.
The stunning images are captured in the next instalment of the BBC's Blue Planet II , which airs on Sunday at 9pm.
Sir David Attenborough reveals: "Like all crabs, their bodies are enclosed in a hard unexpandable shell. So to grow they have to break out of it, and that allows the soft one that has developed beneath to expand. It will take days for the new shell to harden."
Two blazing fireball meteors seen plummeting to Earth were captured on camera in southern England.
The fireballs, brighter than a normal meteor, were spotted from Falmouth to Herne Bay, south Wales, and as far north as Lancaster.
As many as 163 members of the public reported the sightings to the American Meteor Society (AMS), with some coming as far away as Nantes in France.
Several people, included those in Hampshire village Church Crookham and Wilcot in Wiltshire, captured videos of a large bright object falling from the sky.
In the video, an object is seen to flare up before dwindling away.
A cloud of smoke, ash and steam rose to around 5,900 feet over Mexico’s Popocatepetl volcano following November 23’s eruption, the largest since 2013, El Universal reported.
Mexico’s National Center for Prevention of Disasters (CENAPRED) warned residents in Central Mexico not to approach the volcano’s crater and of the potential for volcanic ash to fall to the southeast of Popocatepetl.
Eruptions in 2013 from Popocatepetl, Mexico’s most active volcano, caused airlines to temporarily cancel flights to and from Mexico City due to the threat from volcanic ash
The school run in Siberia is certainly a daily challenge for youngsters - and their parents - as this footage shows.
The pupils can be seen battling against violent, icy storm force winds as they went home from classes this week.
And while some undoubtedly find it fun - that probably wears off if you have to do it every day.
The extraordinary video shows the reality of life in Russkoye Ustye, a village in Allaikhovsky district in Yakutia, Russia.
Extreme winds are blowing at 30 metres per second - not far short of hurricane force at 33m/s - in a week when temperatures will hit minus 44C.
A brave diver has captured shocking footage of a super-sized stingray - that has a knife-like barb which can be fatal for humans - resting on the floor of the ocean bed.
Stefano Ulivi, 42, said the huge creature looked like an 'alien' as he approached, at first mistaking it for a rock.
He was diving in the waters surrounding Azores in the Pico Islands, when he discovered the massive stingray , believed to be up to three metres (9ft 8) - the equivalent of a shark or dolphin.
While trying to get a better view of the massive monster dwelling at 20 metres below sea level, the alien-looking stingray spotted him and within seconds vanished from sight as its fins flapped it away to safety.
Stefano, from Florence, Italy, filmed the footage four-months-ago and managed to get within a metre of the stingray.
For those of you who live in warmer climates and don't understand exactly how weather changes affect those to the north, take a look at this young lady, Kaila Cumings, who decided to shovel her freshly laid snow like any other New Hampshire female, in a bikini.
Because apparently the better weather doesn't affect those who have grown up in those areas like it does those South of Kaila.
Drone footage of towns on the western outskirts of Athens has shown the extent of the damage caused by Wednesday's flash floods in Greece that authorities say have killed 16 people.
This is the terrifying moment a plane is hit by lightning as it takes off from an airport.
The KLM passenger jet was filmed soaring into the air on a cloudy day at Amsterdam Airport.
Plane spotters filmed the aircraft driving onto the runway and preparing to start its journey without any problems.
The airplane fired up its engines and accelerated into the sky during the routine take-off.
But, as the plane started to travel into the thick clouds above there was a sudden bright flash of light.
Dramatic video footage shows cars floating down the road and motorists wading thick red water in flash floods which have left at least 15 people dead in Greece. The Twitter post by Ioanna Zitou appears to show the desperate motorists clinging to bushes on a verge by the side of the road. They may have escaped from the vehicles just before they were inundated in the torrential flood waters . It also shows cars in the motorway which may have been abandoned, while dozens gather on the slip roads to see the power of the raging torrent. Meanwhile footage from Nikos Dioletis shows a huge column of water raging through the streets.
A family was left stunned after watching a huge tarantula and a wasp half its size battle to the death.
Despite being much larger, the tarantula struggled to defend itself from the predator known as a tarantula hawk.
Tarantula hawks hunt the hairy spiders - grabbing them with hooked claws - and deliver one of the most painful stings to humans.
This dramatic death fight was captured on camera while parents Karen and Matthew Perry were on a hike with their children Cash and Cadence.
In the end, the spider wasn't able to defend itself and will now serve as a host for the wasp's offspring before dying.
A powerful magnitude-7.2 earthquake struck the Iraq-Iran border region Sunday, killing more than 300 people in both countries, authorities reported.
The U.S. Geological Survey said the epicenter was 19 miles outside the Iraqi city of Halabja. The semi-official Iranian ILNA news agency reported at least 14 provinces were impacted by the quake. Several thousand were reported injured.
Faramarz Akbari, a local official in the Iranian border city of Ghasr-e Shirin, reported the death toll to Iran’s state-run IRNA news agency.
Iranian social media was abuzz with posts of people evacuating their homes, especially from the cities of Ghasr-e Shirin and Kermanshah. The earthquake struck in a rural, mountainous region where residents rely mainly on farming to make a living.
Esmail Najar, head of Iran’s National Disaster Management Organization, said “some injured people might be buried under the rubble in Ghasr-e Shirin.”
Ayatollah Ali Khamenei, Iran’s Supreme Leader, offered his condolences Monday and urged all government agencies to do all they could to help those affected.
Iran is prone to near daily quakes as it sits on many major fault lines. In 2003, a magnitude-6.6 earthquake flattened the historic city of Bam, killing 26,000 people.
Phones and cameras are pretty resilient nowadays, but if yours was swallowed up by a volcano, you probably wouldn't expect it to survive.
Considering they contain lava, which burns at around 1,000c heat, it's fair to expect lost electrics to fry, burn and melt within a matter of seconds.
So when tour guide Erik Storm managed to lose his GoPro down a small crevice, he thought his footage had been lost forever.
But Mr Storm, who works for Kiluaea EcoGuides , a tour group based in the Hawai'i Volcanoes National Park, decided to see if he could salvage what was left of it.
Mexico’s Popocatépetl volcano erupted three times in 24 hours between November 9 and 10, according to the national civil protection coordinator.The volcano emitted a low amount of ash late Friday morning and a moderate amount of ash earlier in the day, the coordinator said. This footage shows an eruption on November 10
A large, land-dwelling crab, known as a coconut or robber crab, has been observed hunting and killing a seabird, the first time such behaviour has been seen in the species of crustacean.
The phenomenon was witnessed by researcher Mark Laidre of Dartmouth College while he was studying the crabs in the remote Chagos Islands in the Indian ocean, according to New Scientist.
Cindy McNeil is a Canadian water smuggler. Every other day she makes the trip from B.C. into Washington state with a trunk load of fresh Canadian water to sell for profit to an American water buyer. This Is That followed McNeil as she made one of her water smuggling trips.
An epic battle ends in a fatality.
The clouds fell spectacularly over the top of a mountain in Shennongjia, central China's Hubei Province
A small group of mountaineers were visiting the Rocky Mountains in B.C. from Spain on April 21 when they unexpectedly witnessed a large avalanche up close. Skiier and mountaineer Jurek Ziemkiewicz captured the avalanche on camera. The footage shows the moment the group spot the avalanche approaching from above. They then rush to a safe location, just off its path and right next to a sign saying “Expect the Unexpected.” After a few quiet moments, a torrent of snow and debris appears just a few feet away from the group, barreling down the mountain as they stand and watch in awe. (Credit: Jurek Ziemkiewicz via Storyful)
FROM NEW YORK POST - Onlookers in New Hampshire were shocked when they witnessed floodwaters carrying an entire house downstream. The dislodged home eventually crashed into a bridge and was destroyed.
One of Iceland's biggest volcanoes is preparing to erupt, and experts warn the ensuing ash cloud could cause travel chaos across Europe. The 6,590ft Bardarbunga volcano, which is hidden under the ice cap of the Vatnajokull glacier, has been hit by a series of earthquakes in recent days, measuring 3.9, 3.2, 4.7 and 4.7 on the Richter scale. Now scientists are warning that pressure inside the volcano's magma chamber is increasing, suggesting it could erupt within the next few years.
A massive 'water tornado' swirling above the sea was captured in dramatic footage by two brave sailors - as it headed straight towards their ship. Ewen MacKenzie, 37, and Barry Stevenson 31, were on board a vessel in Egyptian waters when the amazing natural spectacle appeared. In just a few minutes the clear blue sky changed rapidly as dark clouds formed and a funnel-cloud swirled in front of them. The phenomenon is known as a waterspout – a tornado-like column of spinning air which forms usually over large lakes or seawater.
These 19 trees will blow your mind!
A horrified mum filming her young son playing with an umbrella captured the moment a bolt of lightning struck just feet away. The 12-year-old boy was standing under a pouring roof drainpipe, using the umbrella to shield his body, in his garden in Posadas, Argentina. Video footage shows a powerful bolt of lightning lance down from the almost clear sky and strike right by him. Carolina Koturm, who was filming her son, shrieks and drops her phone as her garden fence bursts into flames .
Because of heavy rain in Bangalore City, (India) so many people lost their lives. Here is one footage where woman driver saved by pedestrians. Ford Car is floating in flood water. Water level is upto 6 meters above the road level.
This is the dramatic moment a plane struggles to land as the pilots battle 70mph winds caused by Storm Brian. The aircraft swayed from side-to-side as it approached the runway at Birmingham BHX Airport. The pilots faced fierce crosswinds as they landed in the West Midlands hub on Saturday. Storm Brian has sparked chaos, causing roads to shut in some coastal areas including Pembrokeshire and train services to be delayed in Wales and London.
Shocking footage showing surgeons carrying out open-heart surgery when their hospital is suddenly hit by an earthquake has emerged. The doctors in the Mexico City hospital paused the life-saving procedure as the operating room began to shake. Incredible video shows the medical team struggling to stay calm as the room tremors around them. It is thought to have been recorded during the devastating earthquake which hit on September 19, leaving some 300 people dead.
This footage shot by Cataldo Gianluca onboard an Italian tanker off the coast of Ireland shows how high the waves are that they had to contend with during Hurricane Ophelia.
The effects of Hurricane Ophelia were felt right across the country this week - as this driver discovered. The tail of the natural phenomenon brought winds of 90mph to Wales, causing considerable damage. And in the coastal town of Aberystwyth, the waves surged over the wall, carrying a white vehicle with it. Pedestrians nearby were knocked down by the strength of the water as others fled, reports Wales Online. This footage was filmed by exchange student Felicia Mentzel-Ernstved in Aberystwyth.
Twitter user Sean filmed a plane that his parents were on, struggling to land in Dublin Airport during Hurricane Ophelia, then getting struck by lightening.
A school roof in Douglas, Cork is seen being dramatically blown off by storm Ophelia as it's lifted and aggressively sent flying several feet into the air
A video shared on Youtube by Tamara Smith on Oct. 12 shows horrifying scenes as two people try to escape the wildfire in Loma Rica, California. The dramatic video has two men trying to escape the dangerous circumstances of a wildfire.
The footage starts with the man driving asking his fellow passenger to get out of the car and open a gate so that they can escape the harrowing fire. As soon as the man sitting in the passenger seat gets out, he can be heard shouting that he has trouble breathing because of the smoke, after which he gets back in the car and asks his friend to drive away quickly.
The recording is being done by the man sitting in the passenger seat who tells the driver that it is going to get hard to breathe. The vehicle they are driving in is identified by the driver as a Ford Expedition, as he can be heard saying, “Come on Expedition baby, you can do it, girl.”
At one point in the clip, the man driving can be heard suggesting going back but his friend refuses and asks him to escape the fire and not stop before they get out of there, “We almost got killed, man,” he says. The rest of the video shows how the two men despite under critical conditions, escape by driving their car through the nearest gate, away from the fire and the smoke quite heroically.