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Sydney’s Octopi Are Packing Their Bags, “To Tasmanian Waters!”

5807512 3x2 340x227 300x200 Sydneys Octopi Are Packing Their Bags, To Tasmanian Waters!In light of Tasmanian warming heating up, Sydney’s eight-armed sea-folk are packing up, heading south, and reproducing with a greater population turnover and greater growth rate. Talk about things heating up down there. The common Sydney Octopus (Octopus tetricus usually keeps residence  between southern Queensland and southern New South Wales. Jorge Ramos, a PhD candidate from the Institute for Marine and Antarctic Studies (IMAS), has been studying hundreds of the little guys near the east coast of Flinders Island in the Bass Cape of Tunisia.  MORE

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Should We Ban The Sale Of Nautilus Shells?

nautilus shell Should We Ban The Sale Of Nautilus Shells?Nautilus shells are beautiful, no doubt about it. These mollusks are also fairly rare. They are only found in the deep sea of the Indo-Pacific. Their gorgeous shells are also in demand. More than 100,000 shells (according to the U.S. Fish and Wildlife Service (FWS)) are imported into the U.S. each year, to be sold in stores or online. Additionally, the iridescent nacre on the inside of the shell is desired for its decorative use and for use as pearl buttons. A new study by Peter Ward, Professor at the University of Adelaide in Australia, suggests this level of trade is not sustainable. Ward states: “There is no sustainable fishery for nautilus possible anywhere. ” Ward’s study suggest that Nautilus are already almost gone due to over-fishing in places like the Philippines. There is very little restrictions or regulations on Nautilus collection. Ward, along with other conservationists have tried to make the Nautilus protected. The FWS has claimed there was not enough statistical data to support the proposition that the Nautilus needed protective status. Hopefully the more data and awareness there is, the better chance of getting protection for these amazing mollusks. MORE 

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Mr. Saltwater Tank’s Coverage of MACNA 2014 Part 3

In this episode of my MACNA 2014 coverage, I talk to EcoTech Marine, Real Reef Rock and Dr. Tim’s Aquatics.  MORE: Mr. Saltwater Tank’s Coverage of MACNA 2014 Part 3

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Salvaging the Wreckage: A future for our industry

 Salvaging the Wreckage: A future for our industryWe all want healthy fish, and we don’t want to have to take out a second mortgage to get them. Often, I talk with aquarists who are wondering, what is the deal? Sometimes, it seems like pulling teeth, to get parasite free, healthy marine fish, at a fair cost. Most consumers don’t understand the complex details of the marine fish trade. Right now, we are hearing a lot about NOAA, legislation, and even banter that links the reef aquarium industry to reef degradation. What does it mean for our hobby? Will the price of marine livestock rise, making it unaffordable to many aquarists? Will it become illegal to buy or keep certain coral or fish species? Is the combined force of anti-aquarium conservation movements, pending NOAA restrictions, and the belief that reef aquariums are destroying the environment, the end of home reef aquariums? Many of these topics have been debated since before the early 1990s, as marine aquarium technology became better, and more and more people were keeping reef tanks. Suddenly, what was once a tiny industry, was becoming something much larger. Companies that made lighting for horticulture were suddenly producing reef aquarium lights, and by 2000 the reef aquarium world was buzzing, and it’s continued to grow ever since. Answers to some of the questions above begin in understanding where many of our aquarium fish come MORE

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Deep Sea Octopus, Rare Octopus, Octopuses

11bf900foot Octopus 9 18 14 457x305 Deep Sea Octopus, Rare Octopus, OctopusesGood morning from the sunny Caribbean! So as promised I have a new octopus that was found by the Smithsonian Institution last friday in the “Curasub” between 900 and 1000 feet! Is this guy cool looking or what?? And again here is a mega colorful animal that lives in complete darkness so why the need to be so colorful?? As of now I don’t have a name for you and like everything new that comes up from the deep it could be a new species, that’s why we have the Worlds top scientists here to answer questions like this. How big is he you ask? MORE

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Ocean Acidification: The Trillion Dollar Problem

coral image Ocean Acidification: The Trillion Dollar Problem The UN Convention on Biological Diversity has estimated that ocean acidification of coral reefs will cost approximately 1 trillion dollars by the year 2100. The report titled ‘An Updated Synthesis of Ocean Acidification on Marine Biodiversity’ came out last week. The main focus is on the rising levels of carbon dioxide in the atmosphere leading to acidification, and the devastating future effect which will take place if nothing is changed. Just in the past 200 years, a blip in World History, Ocean acidification has increased by 26 percent. MORE

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What Do You Think A Narwhal’s Tusk Is Really For?

tusk What Do You Think A Narwhals Tusk Is Really For? The tusks of Narwhal’s have had a rather mysterious history. Narwhals are medium sized whales from the Arctic waters off the Coast of Greenland, Russia and in Canada. Back in the 12th Century the Tusks would bring in quite a pretty penny since it was believed they came from Unicorn’s and were therefore magical. For centuries people have wondered the true purpose of the Narwhal’s tusk. Aboriginal people and scientists hypothesis that perhaps it was a weapon, a food finder, or even a indicator of male sexual prowess. MORE

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Larval Rearing of the Purple Masked Angelfish (Paracentropyge venusta) Using Only Cultured Food

P.%2Bvenusta%2B72414%2Bday%2B25%2Bright%2Bside%2Bprehistoric Larval Rearing of the Purple Masked Angelfish (Paracentropyge venusta) Using Only Cultured FoodOver the past year while working on our Rising Tide project, the larval rearing work has focused on the Purple Masked Angelfish Paracentropyge venusta. We had success on our fifth rearing trial in getting the larvae to the juvenile stage. That larval trial started in November of 2013 and the success was most likely brought about through the use of wild plankton collected from Kaneohe Bay. Plankton was collected almost daily in an effort to provide the larval fish with the necessary nutrients to get them through the larval phases, past metamorphosis and into the juvenile stage. Although we were happy with this accomplishment it meant that larval rearing of this species might be dependent and only possible in areas near a source of wild plankton. In an effort to make larval rearing successful in any location our next step was to try and rear the P. venusta using only cultured food items.
P.%2Bvenusta%2Bday%2B44%2B81214%2B1.6cm%2BTL%2B Larval Rearing of the Purple Masked Angelfish (Paracentropyge venusta) Using Only Cultured FoodOn our third try while using only cultured foods for the P. venusta larvae we had success again to the juvenile stage. This larval run, “Trial 8” started on June 28, 2014 and the juveniles are currently just over three months old wearing their beautiful yellow and blue colors and are fully transitioned onto frozen and flake foods.  The food items used for this trial were the calanoid copepod, Parvocalanus crassirostris, the rotifer, Brachionus plicatilis, and thebrine shrimp Artemia salina. We were pleasantly surprised that this larval run was on a faster track as compared with our successful wild plankton fed larval run which was quite long. The temperature of this run averaged 26C whereas out trial 5 temperature averaged 25C and this of course could be the reason for faster larval development. We also had a better percent survival with Trial 8 showing 20% survival at day 40 compared to trial 5 at 8.5% survival at day 40. The larvae in Trial 8 were able to capture larger prey starting at day 12 while the larvae in Trial 5 were closer to day 30 when they were able to catch larger prey. The transition to non living foods for the fish in trial 5 took place at 137 days old, which is more than six weeks longer than the fish in trial 8! So not only is it possible to rear these angelfish on only cultured foods, they actually did better on it MORE: Larval Rearing of the Purple Masked Angelfish (Paracentropyge venusta) Using Only Cultured Food

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