Agriculture
Protecting Cows—and People—from a Deadly Disease
Microbes at the Gas Pump
Chicken Eggs as Drug Factories
Amphibians
Bullfrogs
Salamanders and Newts
Toads
Animals
Koalas, Up Close and Personal
Sleepless at Sea
How to Fly Like a Bat
Behavior
Storing Memories before Bedtime
Sugar-pill medicine
The Colorful World of Synesthesia
Birds
Owls
Cardinals
Mockingbirds
Chemistry and Materials
Salt secrets
Popping to Perfection
Getting the dirt on carbon
Computers
Getting in Touch with Touch
Seen on the Science Fair Scene
The Earth-bound asteroid scientists saw coming
Dinosaurs and Fossils
The Paleontologist and the Three Dinosaurs
Mammals in the Shadow of Dinosaurs
Ancient Critter Caught Shedding Its Skin
E Learning Jamaica
2014 GSAT Results for Jamaican Kids
Results of GSAT are in schools this week
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Earth
Warmest Year on Record
Petrified Lightning
Farms sprout in cities
Environment
Sea Otters, Kelp, and Killer Whales
Catching Some Rays
What is groundwater
Finding the Past
Big Woman of the Distant Past
Stonehenge Settlement
Early Maya Writing
Fish
Lungfish
Great White Shark
Mahi-Mahi
Food and Nutrition
Moving Good Fats from Fish to Mice
Food for Life
The Color of Health
GSAT English Rules
Problems with Prepositions
Finding Subjects and Verbs
Adjectives and Adverbs
GSAT Exam Preparation Jamaica
GSAT Scholarship
Tarrant High overcoming the odds
10 Common Mistakes When Preparing for the GSAT Math Test
GSAT Exams Jamaica Scholarships
GSAT Practice Papers | GSAT Mathematics | Maths
2014 GSAT Results for Jamaican Kids
GSAT stars reap scholarship glory
GSAT Mathematics
How a Venus Flytrap Snaps Shut
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Math Naturals
Human Body
Prime Time for Broken Bones
Spitting Up Blobs to Get Around
What the appendix is good for
Invertebrates
Lice
Caterpillars
Worms
Mammals
Dogs
African Hyenas
Yaks
Parents
Children and Media
What Not to Say to Emerging Readers
The Surprising Meaning and Benefits of Nursery Rhymes
Physics
Black Hole Journey
Einstein's Skateboard
The Particle Zoo
Plants
Fastest Plant on Earth
Plants Travel Wind Highways
Hungry bug seeks hot meal
Reptiles
Asp
Crocodiles
Caimans
Space and Astronomy
Pluto's New Moons
Melting Snow on Mars
A Dead Star's Dusty Ring
Technology and Engineering
Morphing a Wing to Save Fuel
Drawing Energy out of Wastewater
Bionic Bacteria
The Parts of Speech
What is a Verb?
Adjectives and Adverbs
Pronouns
Transportation
Robots on the Road, Again
Tinkering With the Basic Bike
Middle school science adventures
Weather
The solar system's biggest junkyard
Antarctica warms, which threatens penguins
Arctic Melt
Add your Article

Gray Whale

The Gray whale or Grey whale (Eschrichtius robustus), more recently called the Eastern Pacific Gray whale, is a whale that travels between feeding and breeding grounds yearly. Gray whales were once called devil fish because of their fighting behavior when hunted. The Gray whale is the sole species in the genus Eschrichtius, which in turn is the sole genus in the family Eschrichtiidae. This animal is one of the oldest species of mammals, having been on Earth for about 30 million years. In the remote past it was preyed upon by Megalodon sharks (which are now extinct). Gray whales are covered by characteristic gray-white patterns, scars left by parasites which drop off in the cold feeding grounds. It reaches a length of about 16 meters (52 ft.), a weight of 36 tons and an age of 50–60 years. Two Pacific Ocean populations of Gray whales exist: one small population traveling between the Sea of Okhotsk and southern Korea, and a larger one traveling between the waters off Alaska and the Baja California. A third, North Atlantic, population was hunted to extinction 300 years ago. In the fall, the California Gray whale starts a 2–3 month, 8,000–11,000 km trip south along the west coast of the United States and Mexico. The animals travel in small groups. The destinations of the whales are the coastal waters of Baja California and the southern Sea of Cortez, where they breed and the young are born. The breeding behavior is complex and often involves three or more animals. The gestation period is about one year, and females have calves every other year. The calf is born tail first and measures about 4 meters in length. It is believed that the shallow waters in the lagoons there protect the newborn from sharks. After several weeks, the return trip starts. This round trip of 16,000–22,000 km, at an average speed of 10 km/h, is believed to be the longest yearly migration of any mammal. A whale watching industry provides ecotourists and marine mammal enthusiasts the opportunity to see groups of gray whales as they pass by on their migration. The whale feeds mainly on benthic crustaceans which it eats by turning on its side (usually the right) and scooping up the sediments from the sea floor. It is classified as a baleen whale and has a baleen, or whalebone, which acts like a sieve to capture small sea animals including amphipods taken in along with sand, water and other material. Mostly, the animal feeds in the northern waters during the summer; and opportunistically feeds during its migration trip, depending primarily on its extensive fat reserves. In 1972, a 3-month-old Gray whale named Gigi was captured for brief study, and then released near San Diego. In January 1997, the new-born baby whale J.J. was found helpless near the coast of Los Angeles, 4.2 m long and 800 kg in mass. Nursed back to health in SeaWorld San Diego, she was released into the Pacific Ocean on March 31, 1998, 9 m long and 8500 kg in mass. She shed her radio transmitter packs three days later.

Gray Whale
Gray Whale








Designed and Powered by HBJamaica.com™