Tuna

Bluefin tuna have suffered major population declines due to overfishing. Recent scientific research discusses various ways to implement management techniques to target the rapid declining population levels of Bluefin Tuna. However, much of this research demonstrates a substantial level of uncertainty about the basic biology of Bluefin Tuna. In particular, a lack of knowledge about the migratory patterns of Bluefin Tuna hinders the success of many proposed management techniques. Thus, it is evident that the biology of Bluefin Tuna needs to be completely understood in order to implement successful monitoring and management techniques. Introduction Bluefin Tuna have been heavily sought after for high quality meat, especially in Japan. Bluefin Tuna are known for their remarkable sizes; they can reach up to 6-10 feet and 1500 pounds. Over the past decade, Bluefin Tuna have become highly profitable due to their demand in the sushi market. This has led to the development of more refined commercial fishing techniques to capture Bluefin Tuna.…

Length could be 6-10 feet Weighs about 1500lbs Can dive 4000 feet below Able to swim long distances Countercurrent Exchange - blood vessel that helps them to stay in a certain temperature in the water gives them advantage to hunt for food. 3 types: Atlantic bluefin tuna Pacific bluefin tuna Southern bluefin tunaAtlantic bluefin: found in Mediterranean Sea and Atlantic Pacific bluefin: found in the Pacific Ocean Food: They eat anything that is small such as zooplankton when they are young. The…

expect others to do so. Fish are too important to many cultures and diets around the world. However, there are alternatives to such as eating other kinds of meats such as beef, or vegetables, and reduce the amount of fish we eat and to suggest that others do so too. To reduce overfishing is to get consumers to buy farm raised or single line caught salt/fresh water fish. This increases jobs for line fishing men/women. It reduces gill nets and drag netting. More than 85 percent of the world's…

Why do you suppose two Betta fish always fight when placed into a bowl of water? It could be inferred to be a territorial instinct, or probably a way to fight for mates, but whichever way you look at it, they always seem to fight when placed together. Beta fish, much like people, can sometimes fight for similar reasons, but sometimes it can be for more personal reasons like religion or values. In Chinua Achebe’s book, Things Fall Apart, he tells the story of an eighteenth century African…

Blue Whale The blue whale Balaenoptera musculus is a marine mammal belonging to the baleen whales Mysticeti. The blue whale is the largest animal to have ever existed. The blue whale can mature up to 100 feet long and can weigh up to 173 tons. The diet of the blue whale consisits of mostly small crustaceans known as krill but also eat small plants and fish. The blue whale’s body type is long and slender and their body shade varies from greyish blue to a dark navy blue. The whales dorsal can…

Seahorses Did you know that seahorses are the only sea animal where the male gives birth instead of the female. What about the fact that seahorses can eat up to 3,000 shrimp per day. While they are sleeping they wrap their tails around seaweed so they don’t float away. Of course, seahorses are very interesting and one of the most interesting animals in marine life. This paper will explain the birth,food,and adaptations of a seahorse. First of all,this is all about a seahorses…

The Caribbean spiny lobster Panulirus argus (Latreille, 1804) supports the most valuable fishery in Cuba, and generates a net income of around US$70 million per year, it provides direct employment to 1,110 fishers and indirect employment to approximately 7,800 people (Puga et al. 2006). The total catch of spiny lobster grew until the early-mid 80s, when reached about 12,000 t. In the early 90s, landings decreased along with the Cuban economy, but by the middle of the 90s it began to recover, but…

According to the article “Search for the Missing Sea Otters: An Ecological Detective Story” by Mary E. Allen and Mark L. Kuhlmann, the sea otter population has been decreasing at a rapid pace since the 1990’s in Aleutian, Alaska. This is demonstrated by article “What Could be the Cause of Decreasing Otter Numbers” which states that in 1997, the decline of the sea otter population had increased to about 90%. They hypothesize that the decrease in the sea otter population has been caused by their…

Blue Whale My animal is the Blue Whale. It is an endangered species. Endangered means that a animal or plant in danger of extinction in the near future throughout most or all of the world. Threatened means any species likely to become an endangered species in the near future throughout all or a significant portion of its range as defined in the Endangered Species Act. Blue whales are mainly found in open oceans from the icy waters of the very near Antarctica in the Southern Hemisphere to the…

Blue whales are interesting animals. The physical characteristics of blue whales set them apart from many animals. The habits of blue whales, including their diet, migration, and mating, are unique. The endangerment of blue whales has been a changing topic over the years. Blue whales are the largest animals on Earth today, they even beat the dinosaurs. A blue whale weighs about 200 pounds and it’s length is about 3 school buses back to back, meaning it can range from 82 to 105 feet.…