Spetsnaz
Rafting
Death Row
Manfred von Richthofen
Back to the Future: The Ride
ED-209
Eurocopter HH-65 Dolphin
Piasecki PA-97
Tooth Bleaching
Raise The Titanic!
Georgia Aquarium
Balls 8
Snow Blower
Spitting Cobra
Great White Shark
MV Mont
Dry Tortugas National Park
Gemini 9A
Starfish Prime
Sebaceous Cyst
Skunk
Wolf Spider
MRAP Armored Vehicle
Prepaid Mobile Phone
Rolling Thunder Inc.
Ecdysis
Inhalant Abuse
LASIK
Hydraulic Rescue Tools
Moray Eel
Star of India
Beretta CX4 Storm
Diver Propulsion Vehicle
Japanese Spider Crab
Blue Angels
Precrash System
Slipway
USS Intrepid CV-11
Nasal Irrigation
Petroleum Toxicity
Carpal Tunnel Syndrome
Ballistic Gelatin
Caminito del Rey
Bhopol Disaster
AK-47
Sardine Run
Tarantula Hawk
Cauliflower Ear
Schwerer Gustav
Crotalus Adamanteus (Eastern Diamondback)
Derweze
MS Oasis of the Seas
Space Exposure
Reflex Sight
Samuel L Jackson
Undercarriage
Knee Replacement
Ultralight Aviation
Vasily Zaytsev
ROKS Cheonan (PCC-772)
Tacome Narrows Bridge (1940)
Bullfrog
Red Flag (USAF)
Traffic Light
Coral snake
Lun-class Ekranoplan
MV Princess Ashika
Kimbo Slice
Reggie Watts
Resolute Desk
Parkour
Miracle On Ice
Blepharoplasty (Eyelid Surgery)
Miss Cleo
Opiliones (Daddy Long Legs)
Colt Anaconda
Hypermiling
Veterinary dentistry
Dental Braces
Hubble Ultra Deep Field
Tap, Rack, Bang
Rhinoplasty
SSC Aero
Sturgis Motorcycle Rally
Red Rock Crab
Sl-1
Surgical Suture
Abdominoplasty
Lethal Injection
Osprey
Assault Breacher Vehicle
Parasailing
Mount Vesuvius
Pit Bull
Desert Tortoise
Four-stroke Engine
RT-2UTTH Topol M
Mil Mi-26
Möbius Syndrome
Pykrete
Gimli Glider
Tonsillolith
Chewing Gum
Water Rocket
African Grey Parrot
Nunchaku
RAID
Rat
Fred Rogers
Guinness
Jameson Irish Whiskey
Sunday Times Golden Globe Race
Casu Marzu
LED-backlit LCD television
Suppressor
Bear Grylls
Big Bertha (Howitzer)
Crawler-Transporter
Principality of Sealand
Car Battery
White Blood Cell
Digital Photography
Flying First Class
Freestyle Skiing
Goblin Shark
The Three Stooges
Benelli M4 Super 90
Tanker 910
Breast Reduction
Hiller X-18
Obstructive Sleep Apnea
Down Syndrome
Spider Monkey
Union Pacific Big Boy
Warrenpoint Ambush
Apollo 11
Les Stroud
Richard Pryor
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North American X-15
Blue Ringed Octopus
Rhytidectomy (Facelift)
Saint Valentine's Day Massacre
Big Mac Index
Annelid
Tiger Shark
Niagara Falls
Heckler & Koch MP5
Hyena
2008 Toronto Propane Explosion
Lamborghini Countach
Breast Implant
Delorean DMC-12
Tonopah Test Range Airport
Buran Program
Poison Dart Frog
Samuel Adams Beer
Outlaws Motorcycle Club
P-51 Mustang
Fluorescence
Simo Hayha
Hot Dog
Airwolf
Golden Eagle
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HMS Ardent
Taurus Judge
Antipredator Adaption
Tom Savini
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Hyacinth Macaw
AH-1 Super Cobra
Honey Badger
Traumatic Brain Injury
Emma Maersk
Magma
Patterdale Terrier
Evergreen Supertanker
Andre The Giant
Minigun
Irukandji Jellyfish
.357 SIG
The Greatest American Hero
USS Thresher (SSN-593)
Richard Simmons
Ingrown Toenail
Spud Gun
Trebuchet
Go-Go Dancing
Suicide By Cop
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KITT
Green Anaconda
Richard Kuklinski
Rip Current
Buzkashi
1993 Storm Of The Century
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Florida Stone Crab
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Times Square Ball
The Year Without A Santa Claus
Rudolph The Red Nosed Reindeer
K2
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Massive Ordinance Penetrator
Neuschwanstein Castle
SR-71 Blackbird
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Mitch Hedberg
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USS Nautilus
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Sid Haig
Burj Dubai
Bagger 288
Goliath Birdeater
Robert Lasardo
Antonov An 225
HU-16 Albatross
Galileo Spacecraft
Crack Cocaine
Lyle Alzado
Caterpillar 797
Muay Thai
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filed under | marinelife
The annelids, collectively called Annelida, are a large phylum of segmented worms, with over 17,000 modern species including ragworms, earthworms and leeches. They are found in marine environments from tidal zones to hydrothermal vents, in freshwater, and in moist terrestrial environments. Since annelids are soft-bodied, their fossils are rare – mostly jaws and the mineralized tubes that some of the species secreted. Feeding structures in the mouth region vary widely, and have little correlation with the animals' diets. Many polychaetes have a muscular pharynx that can be everted (turned inside out to extend it). In these animals the foremost few segments often lack septa so that, when the muscles in these segments contract, the sharp increase in fluid pressure from all these segments everts the pharynx very quickly. Two families, the Eunicidae and Phyllodocidae, have evolved jaws, which can be used for seizing prey, biting off pieces of vegetation, or grasping dead and decaying matter. Accounts of the use of leeches for the medically dubious practise of blood-letting have come from China around 30 AD, India around 200 AD, ancient Rome around 50 AD and later throughout Europe. In the 19th century medical demand for leeches was so high that some areas' stocks were exhausted and other regions imposed restrictions or bans on exports, and Hirudo medicinalis is treated as an endangered species by both IUCN and CITES. More recently leeches have been used to assist in microsurgery, and their saliva has provided anti-inflammatory compounds and several important anticoagulants, one of which also prevents tumors from spreading. [READ THE REST OF THIS ARTICLE]
