Good Thing They’re Small!

Posted: February 8th, 2012 in animals, life science, marine life, nature
Tags: , , , , ,

Uploaded by on Apr 30, 2007

Pistol shrimp blowing a blast of water a speed of 100km/h with temp 4700C.

Now this is cool. Nature always delivers the most fascinating designs. A gun built into your arm, with an endless supply of bullets…

From this creature’s Wikipedia page:
(Sorry about using Wiki as they are
such a tool of the wrong people, but I’m lazy today and for this sort of thing they’re truthful…)

I find the first paragraph pretty darn interesting…

Pistol shrimp have also been noted for their ability to reverse claws. When the snapping claw is lost the missing limb will regenerate into a smaller claw and the original smaller appendage will grow into a new snapping claw. Laboratory research has shown that severing the nerve of the snapping claw induces the conversion of the smaller limb into a second snapping claw. This phenomenon of claw symmetry in snapping shrimp has only been documented once in nature.[10]

Snapping effect

The snapping shrimp competes with much larger animals like the Sperm Whale and Beluga Whale for the title of ‘loudest animal in the sea.’ The animal snaps a specialized claw shut to create a cavitation bubble that generates acoustic pressures of up to 80 kPa at a distance of 4 cm from the claw. As it extends out from the claw, the bubble reaches speeds of 60 miles per hour (97 km/h) and releases a sound reaching 218 decibels.[11] The pressure is strong enough to kill small fish.[12] It corresponds to a zero to peak pressure level of 218 decibels relative to one micropascal (dB re 1 μPa), equivalent to a zero to peak source level of 190 dB re 1 μPa at the standard reference distance of 1 m. Au and Banks measured peak to peak source levels between 185 and 190 dB re 1 μPa at 1 m, depending on the size of the claw.[13] Similar values are reported by Ferguson and Cleary.[14] The duration of the click is less than 1 millisecond.

The snap can also produce sonoluminescence from the collapsing cavitation bubble. As it collapses, the cavitation bubble reaches temperatures of over 5,000 K (4,700 °C).[15] In comparison, the surface temperature of the sun is estimated to be around 5,800 K (5,500 °C). The light is of lower intensity than the light produced by typical sonoluminescence and is not visible to the naked eye. It is most likely a by-product of the shock wave with no biological significance. However, it was the first known instance of an animal producing light by this effect. It has subsequently been discovered that another group of crustaceans, the mantis shrimp, contains species whose club-like forelimbs can strike so quickly and with such force as to induce sonoluminescent cavitation bubbles upon impact.[16]

The snapping is used for hunting (hence the alternative name “pistol shrimp”), as well as for communication.

Jebus! What will Mother come up with next? Ha! Okay, how about this guy…?

Uploaded by on Dec 27, 2006

Animal Olympians: Featherweight boxing. A maritime creature that is 4 inches long and more powerful than a point 22 calibre pistol. Big things certainly do come in small packages!

Good gracious!

From this creature’s Wikipedia page:

Mantis shrimp or stomatopods are marine crustaceans, the members of the order Stomatopoda. They are neither shrimp nor mantids, but receive their name purely from the physical resemblance to both the terrestrial praying mantis and the shrimp. They may reach 30 centimetres (12 in) in length, although exceptional cases of up to 38 cm (15 in) have been recorded.[2] The carapace of mantis shrimp covers only the rear part of the head and the first four segments of the thorax. Mantis shrimp appear in a variety of colours, from shades of browns to bright neon colours. Although they are common animals and among the most important predators in many shallow, tropical and sub-tropical marine habitats they are poorly understood as many species spend most of their life tucked away in burrows and holes.[3]

Called “sea locusts” by ancient Assyrians, “prawn killers” in Australia and now sometimes referred to as “thumb splitters” — because of the animal’s ability to inflict painful gashes if handled incautiously[4] — mantis shrimp sport powerful claws that they use to attack and kill prey by spearing, stunning or dismemberment. Although it happens rarely, some larger species of mantis shrimp are capable of breaking through aquarium glass with a single strike from this weapon.[5]

Did you catch that last sentence? Yikes!

I am impressed by this next video… burrow too confining? No worries, mate, I’ll fix it!

Uploaded by on Aug 27, 2010

at about 23 seconds, manty makes more room for him/herself
rip manty

The ocean fascinates me endlessly because it is just as exciting as space, maybe even more so, as it is nearly totally (98%) unexplored and it is right here! It is said we know more about the moon than our oceans. This is quite true.

Just think what would discover if the monies used for war were used to explore the wonderful planet we live on.



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