Protecting Cows—and People—from a Deadly Disease
Making the most of a meal
Middle school science adventures
Tree Frogs
Frogs and Toads
Salamanders and Newts
A Jellyfish's Blurry View
Living in the Desert
The Secret Lives of Grizzlies
A brain-boosting video game
Memory by Hypnosis
Puberty gone wild
Chemistry and Materials
Pencil Thin
These gems make their own way
Undercover Detectives
Batteries built by Viruses
The hungry blob at the edge of the universe
A Light Delay
Dinosaurs and Fossils
Middle school science adventures
Dino Flesh from Fossil Bone
Message in a dinosaur's teeth
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
Giving Sharks Safe Homes
The Rise of Yellowstone
Easy Ways to Conserve Water
What is groundwater
A Change in Climate
Cactus Goo for Clean Water
Finding the Past
Big Woman of the Distant Past
The Taming of the Cat
Your inner Neandertal
Electric Eel
White Tip Sharks
Food and Nutrition
Turning to Sweets, Fats to Calm the Brain
Moving Good Fats from Fish to Mice
Packing Fat
GSAT English Rules
Who vs. Whom
Who vs. That vs. Which
Order of Adjectives
GSAT Exam Preparation Jamaica
GSAT Scholarship
March 21-22, 2013: Over 43,000 students will take the GSAT Exam
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
GSAT Exams Jamaica Scholarships
2014 GSAT Results for Jamaican Kids
42,000 students will sit for the GSAT Exam in two weeks
GSAT Practice Papers | GSAT Mathematics | Maths
GSAT Mathematics
Play for Science
Math Naturals
GSAT Mathematics Quiz, Teaching Math, teaching anxiety
Human Body
Taste Messenger
Tapeworms and Drug Delivery
Spit Power
Guinea Pigs
A Grim Future for Some Killer Whales
Choosing a Preschool: What to Consider
The Surprising Meaning and Benefits of Nursery Rhymes
How children learn
Road Bumps
Electric Backpack
Black Hole Journey
Seeds of the Future
White fuzzy mold not as friendly as it looks
Nature's Alphabet
Gila Monsters
Space and Astronomy
Icy Red Planet
Slip-sliding away
Cousin Earth
Technology and Engineering
Riding Sunlight
Model Plane Flies the Atlantic
Drawing Energy out of Wastewater
The Parts of Speech
What is a Verb?
Countable and Uncountable Nouns
What is a Noun
Robots on the Road, Again
Reach for the Sky
Morphing a Wing to Save Fuel
Catching Some Rays
In Antarctica watch the heat (and your step)
Where rivers run uphill
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Giant Clam

The giant clam (Tridacna gigas) or traditionally, pa’ua, is the largest living bivalve mollusc. One of a number of large clam species native to the shallow coral reefs of the South Pacific and Indian oceans, they can weigh more than 180 kilograms (400 pounds) and measure as much as 1.5 metres (5 feet) across. Tissue habitat: Stationary in adulthood, the creature's mantle tissues act as a habitat for the symbiotic single-celled dinoflagellate algae (xooxanthellae) from which it gets its nutrition. By day, the clam spreads out its mantle tissue so that the algae receive the sunlight they need to photosynthesize. Misunderstood giant: As is often the case with uncharacteristically large species, the giant clam has been historically misunderstood. Man-eating clam? Known in times past as the killer clam or man-eating clam, reputable scientific and technical manuals once claimed that the great mollusc had caused deaths; oneself from its grasp by severing the adductor muscles used to close its shell. Strong grip is defensive, not offensive: Today, it is generally acknowledged that the giant clam is neither aggressive nor particularly dangerous; while it is certainly capable of holding one fast in its grip, the shell's closing action is actually a defensive response, and far too slow to pose any reasonable threat. No account of a human becoming trapped in this manner has ever been substantiated.

Giant Clam
Giant Clam

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