One of the most frightening creatures around is the Giant Spider Crab, also known as the Japanese Spider. While these bad boys aren't are huge and scary as some crabs out there, they are still pretty darn creepy. Here are 10 reasons why the Giant Spider Crab is most terrifying crustacean of the deep. Imgur.
http://www.viralnova.com/nightmare-giant-spider-crab/
Coconut crab. The coconut crab (Birgus latro) is a species of terrestrial hermit crab, also known as the robber crab or palm thief. It is the largest land-living arthropod in the world, and is probably at the upper size limit for terrestrial animals with exoskeletons in recent times, with a weight of up to 4.1 kg (9.0 lb). It can grow to up to 1 m (3 ft 3 in) in length from leg to leg.
https://en.wikipedia.org/wiki/Coconut_crab
With its enormous legs and lethal claws, this monster of the deep is already the biggest crab ever seen in Britain. But astonishingly, the arthropod - which measures a staggering 10ft from claw to claw - is still growing, and could live until it is 100. Nicknamed 'Crabzilla' after the fictional giant monster, the Japanese Spider Crab has a body the size of a basketball and its legs can straddle a car. They will eventually measure a massive 15ft. Crabzilla: Derek Scales from the National Sealife Centre in Birmingham with the biggest crab in Britain.
http://www.dailymail.co.uk/news/article-1250168/Biggest-crab-seen-Britain.html
Birgus latro is more commonly known as the coconut crab, and it’s the largest terrestrial arthropod in the world (the largest overall being the Japanese spider crab — but that’s a story for another week).
https://www.wired.com/2013/12/absurd-creature-of-the-week-2/
Absurd Creature of the Week: Enormous Hermit Crab Tears Through Coconuts, Eats Kittens. It’s hard to go wrong with a hermit crab as your child’s first pet. They’re low maintenance and kinda cute in their own way, plus they’re hypoallergenic, as PetSmart feels the need to point out. But use care when choosing your crab.
https://www.wired.com/2013/12/absurd-creature-of-the-week-2/
This thing was the same size and shape of a modern sperm whale (that is, four times as long as the largest great white sharks), with a head built like a battering ram and a tail as big as a small car.
http://www.cracked.com/article_19207_the-7-most-terrifyingly-huge-things-in-history-nature.html
Picture the biggest of the dinosaurs in Jurassic Park (specifically, the Brachiosaurus, aka the gigantic dinosaur with the long neck). Now let's use it to give you some sense of scale as to just how huge the Amphicoelias Fragillimus was. Here's Dr. Ian Malcolm, naked, standing next to a Brachiosaurus ...
http://www.cracked.com/article_19207_the-7-most-terrifyingly-huge-things-in-history-nature.html
Japanese spider crab. The Japanese spider crab (タカアシガニ, takaashigani, lit. tall-legged crab), Macrocheira kaempferi, is a species of marine crab that lives in the waters around Japan. It has the largest leg span of any arthropod. It is the subject of small-scale fishery which has led to some conservation measures.
https://en.wikipedia.org/wiki/Japanese_spider_crab
April 1965. The world's largest known spider is a male goliath bird-eating spider (Theraphosa blondi) collected by members of the Pablo San Martin Expedition at Rio Cavro, Venezuela in April 1965. It had a record leg-span of 28 cm (11 in) - sufficient to cover a dinner plate.
http://www.guinnessworldrecords.com/world-records/largest-spider
For being the biggest animals in the ocean, whales are usually nothing more than floating islands, filter-feeding on tiny shrimp. But set your time machine back far enough, and you'll find the waters full of insanity: Via destylou-historia. That thing could eat humans by the handful like popcorn.
http://www.cracked.com/article_19207_the-7-most-terrifyingly-huge-things-in-history-nature.html
world's largest spider crab
World's largest spider crab is Japanese spider crab.   