Agriculture
Flush-Free Fertilizer
Getting the dirt on carbon
Silk’s superpowers
Amphibians
Salamanders
Bullfrogs
Tree Frogs
Animals
Thieves of a Feather
Who's Knocking?
Little Bee Brains That Could
Behavior
How Much Babies Know
The Electric Brain
Pondering the puzzling platypus
Birds
Swans
Albatrosses
Owls
Chemistry and Materials
Supersonic Splash
Sweeeet! The Skinny on Sugar Substitutes
Atomic Drive
Computers
Troubles with Hubble
Hitting the redo button on evolution
Fingerprint Evidence
Dinosaurs and Fossils
Dino-bite!
Message in a dinosaur's teeth
Winged Insects May Go Way Back
E Learning Jamaica
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
2014 GSAT Results for Jamaican Kids
Results of GSAT are in schools this week
Earth
Life trapped under a glacier
Farms sprout in cities
Science loses out when ice caps melt
Environment
Pumping Up Poison Ivy
Seabirds Deliver Arctic Pollutants
Fungus Hunt
Finding the Past
Chicken of the Sea
A Long Haul
Sahara Cemetery
Fish
Basking Sharks
Goldfish
Megamouth Sharks
Food and Nutrition
Eat Out, Eat Smart
The mercury in that tuna
A Taste for Cheese
GSAT English Rules
Who vs. That vs. Which
Who vs. Whom
Subject and Verb Agreement
GSAT Exam Preparation Jamaica
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Preparing for the GSAT Exam
GSAT stars reap scholarship glory
GSAT Exams Jamaica Scholarships
GSAT Practice Papers | GSAT Mathematics | Maths
GSAT stars reap scholarship glory
2014 GSAT Results for Jamaican Kids
GSAT Mathematics
How a Venus Flytrap Snaps Shut
GSAT Practice Papers | GSAT Mathematics | Maths
42,000 students will sit for the GSAT Exam in two weeks
Human Body
Teen Brains, Under Construction
Nature's Medicines
Cell Phone Tattlers
Invertebrates
Sponges
Bedbugs
Horseshoe Crabs
Mammals
Dingoes
Wolverines
Llamas
Parents
How children learn
Children and Media
What Not to Say to Emerging Readers
Physics
Dreams of Floating in Space
IceCube Science
Road Bumps
Plants
Sweet, Sticky Science
When Fungi and Algae Marry
Cactus Goo for Clean Water
Reptiles
Komodo Dragons
Pythons
Alligators
Space and Astronomy
Cousin Earth
An Icy Blob of Fluff
Saturn's New Moons
Technology and Engineering
Are Propellers Fin-ished?
A Micro-Dose of Your Own Medicine
Slip Sliming Away
The Parts of Speech
Problems with Prepositions
What is a Noun
What is a Verb?
Transportation
Reach for the Sky
Are Propellers Fin-ished?
Flying the Hyper Skies
Weather
A Dire Shortage of Water
Watering the Air
Where rivers run uphill
Add your Article

Giant Squid

Giant squid, once believed to be mythical creatures, are squid of the Architeuthidae family, represented by as many as eight species of the genus Architeuthis. Real giants: They are deep-ocean dwelling squid that can grow to a tremendous size: recent estimates put the maximum size at 10 m (34 ft) for males and 13 m (44 ft) for females from caudal fin to the tip of the two long tentacles (second only to the Colossal Squid at an estimated 14 m, one of the largest living organisms). The mantle length, though, is only about 2 m (7 ft) in length (more for females, less for males), and the length of the squid excluding its tentacles is about 5 m (16 ft). There were reported claims of specimens of up to 20 m (66 ft), but none had been scientifically documented. Light giants: Despite their great length, giant squid are not particularly heavy when compared to their chief predator, the Sperm Whale, because the majority of their length is taken up by their eight arms and two tentacles. The weights of recovered specimens have been measured in hundreds, rather than thousands, of kilograms. Post-larval juveniles have been discovered in surface waters off New Zealand, and there are plans to capture more such juveniles and maintain them in an aquarium in an attempt to learn more about the creature's biology and habits. Second largest eyes: Giant squid possess the second largest eyes of any living creature, over 1 foot (30 cm) in diameter, and their arms are equipped with hundreds of suction cups in total; each is mounted on an individual "stalk" and equipped around its circumference with a ring of sharp teeth to aid the creature in capturing its prey by firmly attaching itself to it both by suction and perforation. The size of these suction cups can vary from 2 to 5 cm in diameter (one to two inches), and it is not uncommon to find their circular scars on the head area of sperm whales that have fed — or attempted to feed — upon giant squid. The only other known predator of the adult giant squid is the Pacific sleeper shark, found off Antarctica, but it is not yet known whether these sharks actively hunt the squid, or are simply scavengers of squid carcasses. Because sperm whales are skilled at locating giant squid, scientists have attempted to conduct in-depth observations of sperm whales in order to study squid. Buoyant and untasty: One of the more unusual aspects of giant squid (as well as some other species of large squid) is their reliance upon the low density of ammonia in relation to seawater to maintain neutral buoyancy in their natural environment, as they lack the gas-filled swim bladder that fish use for this function; instead, they use ammonia (in the form of ammonium chloride) in the fluid of their flesh throughout their bodies, making it taste not unlike salmiakki. This makes the giant squid unattractive for general human consumption, although sperm whales seem to be attracted by (or are at least tolerant of) its taste. Growth rings: Like all cephalopods they use special organs called statocysts to sense their orientation and motion in the water. The age of giant squids can be estimated by "growth rings" in the statocyst's "statolyth" much like counting tree rings. Much of what is known about these animals come from estimates based on these, and from undigested beaks found in sperm whale stomachs. Mysterious mating: The reproductive cycle of the giant squid is still a great mystery, but what has been learned so far is both bizarre and fascinating; male giant squid are equipped with a prehensile spermatophore-depositing tube, or penis, of over 3 feet (90 cm) in length, which extends from inside the animal's mantle and apparently is used to inject sperm-containing packets into the female squid's arms — how exactly the sperm then is transferred to the egg mass is a matter of much debate, but the recent recovery in Tasmania of a female specimen having a small subsidiary tendril attached to the base of each of its eight arms could be a vital clue in the solution of this enigma. The giant squid lacks the hectocotylus used for reproduction in many other cephalopods.

Giant Squid
Giant Squid








Designed and Powered by HBJamaica.com™