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The Registry of World Record Size Shells is a conchological work listing the largest (and in some cases smallest) verified shell specimens of various marine molluscan taxa.A successor to the earlier World Size Records of Robert J. L. Wagner and R. Tucker Abbott, it has been published on a semi-regular basis since 1997, changing ownership and publisher a number of times.
This is the largest extant snail (shelled gastropod) species in the world, and arguably the largest (heaviest) gastropod in the world. Although the shell itself is quite well known to shell collectors because of its extraordinary size, little is known about the ecology and behavior of the species, [7] except for one study about its feeding habits.
The largest shell-less gastropod is the giant black sea hare (Aplysia vaccaria) at 0.99 m (3.2 ft) in length and almost 14 kg (31 lb) in weight. The largest of the land snails is the giant African snail (Achatina achatina) at up to 1 kg (2.2 lb) and 35 cm (14 in) long. Cephalopods (Cephalopoda) (See Cephalopod size.)
The largest known T. gigas specimen measured 137 centimetres (4 ft 6 in), and it weighed 230 kg (510 lb) dead and was estimated to be 250 kg (550 lb) alive. It was discovered around 1817 on the north western coast of Sumatra, Indonesia, and its shells are now on display in a museum in Northern Ireland. [6]: 31 [15]
The pearl has a length close to 2 feet and the weight of the pearl is close to 34 kilograms. Its vertical folds that emulate the shell of the tridacna gigas indicate that it is a carved shell. [5] Unlike true pearls, the Pearl of Puerto does not show iridescence. Since the pearl is bigger than the Pearl of Lao Tzu, the value of the pearl is ...
Explosive shells: In the Industrial Age, artillery was again revolutionized by the introduction of explosive shells, beginning with the Paixhans guns. Breakthroughs in metallurgy and modes of production were followed up by new experimentation with super-sized caliber weapons, culminating in the steel colossi of the two World Wars.
Prelude FLNG was approved for funding by Shell in 2011. [12] Analyst estimates in 2013 for the cost of the vessel were between US$10.8 to $12.6 billion. [5] Shell estimated in 2014 that the project would cost up to US$3.5 billion per million tons of production capacity.
1880s - World War I 47 mm (1.9 in) QF 3 pounder Hotchkiss Mk I, Mk II France: World War I - World War II 47 mm (1.9 in) QF 3 pounder Vickers United Kingdom: World War I - World War II 47 mm (1.9 in) QF 3 pounder Nordenfelt United Kingdom: World War I - World War II 50 mm (2.0 in) 5 cm SK L/40 gun German Empire: World War I - World War II