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Dec
04

Amphipods Copepods

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Amphipods Copepods

In early March 2009 a new calf was born. This young whale will have to nurse and be nursed by his mother for two or three years before it turns off by itself to survive against pollution and predation of man. These whales produce patterns of sequences of powerful, low frequency calls that have the lowest voices of any whale, vocalizing as low as 14 Hz at volumes up to 200 decibels. Sounds at this frequency and intensity can travel thousands of miles in the ocean deep. These sounds may be used to communicate with other whales to navigate through the creation of a sound image of distant oceanic features.

Blue whales are endangered in all oceans of the world from the tropics to the drift ice of polar waters. Their populations have been seriously depleted throughout its range due to commercial whaling. They are slate gray and mottled with light blue spots, especially in the back and shoulders. The bottom often are covered with microorganisms, giving the belly a yellowish tinge. Because of that blue whales are sometimes called "sulfur bottom." Hemisphere blue whales north appear to travel shorter distances than their cousins in the south between the rich feeding areas and may be reproduced in some of these areas, like the dome of Costa Rica, west of the Galapagos Islands and the Gulf of California. The blue whale is produced mainly in cold and temperate waters. Prefers the deeper waters of the ocean front coastal waters. Their diet consists almost entirely of crustaceans like shrimp known as krill, eaten during the summer feeding season.

During the other 8 months of the year, apparently, does not eat anything, living off stored fat. The blue whale usually feeds at depths below 100 m (330 ft). An immersion usually lasts 10 to 20 minutes. By doing a deep dive, the whale "standing on the head", exposing its tail fins wide, then drops abruptly. Upon returning to the surface, the whale releases a "coup", about 9 meters (30 feet) tall, made of warm, moist air from the lungs, mucus, and ocean water. The dorsal fin is short, only about 35 cm. The upper jaw is the widest in the genus, and the grandstand is categorical. Slots 50-90 throat extending from the chin past the navel. After playing in the winter months, the gestation period is eleven or twelve months. The young are born in warm, low latitude waters in the winter months, after the adults return to their areas of high latitude feeding. At birth, young people are 7.8 meters (22.75 to 26 feet) long. While nursing, blue whales can earn up to 90 kg of body weight per day. Young are weaned after seven or eight months. That is about 16 meters (52 feet) long. The females are sexual partners as he approaches the age of 5 and 21 to 23 meters (68.25-74.75 ft) in length. Every 2 or 3 years, she will have another calf. The twins are rare. Adult males 20 to 21 meters (65-68.25 feet) long and about 5 years old. Longevity is estimated at around 90 years in the wild and up to 110 years in captivity.

Most populations of blue whales are spending the winter migratory in low latitude waters, moving toward the poles during the spring, they feed in waters of high latitudes during the summer and heading back to Ecuador in the fall. The jet blue whale can reach nearly 10 meters (32.5 feet) high.

Blue whales are usually solitary or in pairs of pairs of mother and calf or two adults, although they may meet in separate groups have up to 60 to feed. Groups of up to 60 animals have been reported, but solitary animals or pods of two or three are more common. Blue whales in Antarctic waters species feed primarily on krill, copepods, amphipods, and some fish and squid. Adult whale blue virtually no natural predators except humans. Blue whale calves may be vulnerable to predation by killer whales and large sharks. These giants soft sea bother no one, but they need our protection. Perhaps reducing our carbon footprint, clean seas and end the biggest harvest largest living mammal on earth maybe just maybe we can all breathe easier and start living again.

Author : M. Wolken, PhD is Dr. Stress-Less a specialist in helping you and your planet get healthier and stress-less.
Let’s work with our kids to save the planet join us at http://naturescrusaders.com.

Planted Refugium with Amphipods and Copepods

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Categories : Saltwater Aquariums
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