http://www.istitutotethys.org/gargano/
They suspect a high ingestion rate of plastic bags.
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Marine & Freshwater Environmental Education
http://www.istitutotethys.org/gargano/
They suspect a high ingestion rate of plastic bags.
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The striped bass (Morone saxatilis) is the state fish of Maryland, Rhode Island, South Carolina, and the state saltwater fish of New York and New Hampshire. The fish is commonly referred to as the rockfish. The fish supports a $6.5 billion per year industry with 60,000 jobs as a recreational game species. Read more about this in the November 22, 2009 article in the Washington Times, “Anglers serve time for black-market rockfish trade” by Jim McElhatton.
Image (c) Fish and Wildlife Service via wikimedia
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Yes, it is unfortunate. Please read the article from the New Republic
“Aquacalypse Now: The End of Fish” by Daniel Pauly (pictured) to find out more.
Daniel Pauly is a professor at the Fisheries Centre of the University of British Columbia and the principal investigator of its Sea Around Us Project.
Image (c) carmelfinley.wordpress.com
Can you guess the common name designated to the animal pictured to the right?
Here are some facts about the critter:
Image (c) of newscience.com
Environmental News Network sent a news release out today about a new report that states how Orca orca may die off if the numbers of king salmon continue to drop.
The research was published in the Royal Society Biology Letters. The leading cause of the death of the killer whales is actually “nutritional stress” from not being able to find the king salmon. So that is potentially what could happen to me when I do not get a happy fixing of peanut butter once in a while.
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Bony fish have a swim bladder, a gas filled sac. The swim bladder originates as part of the belly. The swim bladder aids in creating an equilibrium with what is going on inside the fish and the surrounding water.
Some fish have a bladder that is part of the respiratory system, called an air bladder. It even creates a drumming sound. Croaker, red drum and black drum are part of the group.
Fish that have a skeleton made of cartilage do not have a swim bladder.
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People often wear shark’s teeth around their neck. But, what is the significance and how do they get them? As the internet research states a sharks tooth symbolizes virility. I am not going to get any further into that aspect of the question. To each his or her own.
Here is some information on the rest of the question.
Shark teeth are plentiful. They may have up to 20,000 teeth in their lifetime! Once we lose our baby teeth we have only 32 adult teeth for the rest of our lives. However, sharks are constantly replacing their teeth whenever they get torn out. They may get torn out when
ripping apart prey. This may seem like it will hurt, but, a shark’s entire skeleton is made out of cartilage. Cartilage is the very flexible material we have in our ears and nose. The shark’s stock supply of teeth act like a conveyor belt constantly ready to replace one that has fallen out (pictured).
Here are really great places to go exploring for shark teeth: Shark River, N.J.; Flag Pond Beach, MD; Amelia Island, FL; and Cooper River, S.C.
Also, again, Happy Shark Week!
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image (c) sharkfact.org
Sharks really do have a sixth sense.
It is the electrosensory organ that we spoke of with the hammerhead sharks. The electrosensory organ is called the ampullae of Lorenzini. Sounds intimidating, however, it’s really just a jelly filled canal that starts near the nose and helps them find food under the sand and figure out what direction they are going.
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It really feels like a phenomenon – especially when Poets.org is also celebrating Shark Week!
Here is a good one from the site by Isaac McLellan (poem “The Bluefish“):
The weaker tenants of the main
Flee from their rage in vain,
The vast menhaden multitudes
They massacre o’er the flood;
With lashing tail, with snapping teeth
They stain the tides with blood.
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The hammerhead shark has evolved the interesting looking skull cap to accommodate its extra collection electrosensory organs. All sharks do have these electrosensory organs, but, the hammerhead has a bit more than the average shark species.
The electrosensory organ are useful for traveling far distances in the open ocean. It is like a internal GPS system. (I am not sure if it comes with a funny British accent like the one in my uncle’s car though.)
Also, another reason that the hammerhead may have evolved that shaped head is because it loves to eat squid. That head will surely be able to tangle up those tentacles lurking around the corners.
Again, Happy Shark Week!
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Image (c) animalport.com
One idea I had when I started this website almost ten years ago was that I wanted to make science simple and accessible. I hope I have created a place where questions on anything from barnacles to whales can be answered in a knowledgeable no-nonsense or overly jargon tone. My secondary goal has also been […]
From time to time, I like to revisit the more popular posts and present either new material or the material in a new format. Below is a simplified understanding of the three general ways that fish give birth (i.e., Within each category below there are sub-categories that I did not get into here). Please feel free […]
Not in the traditional sense that you and eye see, I mean, you and I see. Sea stars (Sidenote: since they are not ‘fish’ sea stars, as opposed to starfish, is more appropriate) have an eyespot at the tip of each “leg”. These eyespots can distinguish between light and dark and other stimuli and the […]
I will get into more detail quickly, but, want to mention that marine spatial planning is gaining a lot of momentum these days because it is part of creating the National Ocean Policy. A National Ocean Policy was recommended by the Pew Oceans Commission (in 2003) and the US Commission on the Oceans (in 2004) […]
As a new mama, the wheels in my head are constantly wondering how my daughter’s surroundings will influence her personality. I sure hope she’s not bitter like the anglerfish featured in yesterday’s Sherman’s Lagoon cartoon. I will just remind the little one to keep smiling and tell her that adaptations are what led to the […]
Please feel free to share with your friends and family where you learned something new about sea lions today! Also, ask away! If you have a question about something you found on the beach or just something you’re curious about just send an email to info@beachchairscientist.com or tweet us!
In honor of National Wear Blue for Oceans Day this January 13, 2010 here is a little ditty to get you amped … Lyrics amended from the song “Love Me Do” written by the brilliant John Lennon and Paul McCartney of The Beatles. Love, love our blue. You know we love blue, We’ll always be […]
There are three general ways fish in the sea give birth to a new generation. I will start off explaining what is most familiar to us, fish that give birth to live young. This is called being viviparous. There is a structure similar to the placenta that connects the embryo to the mother’s blood supply. […]
Some products need a little something extra to basically hold it together. Certain ice creams, lip sticks and even beer use a derivative of red seaweed, called carrageenan, to emulsify the products. Do you have another great question? Check out www.beachchairscientist.com and let us know what you always ponder while digging your toes in the […]
I’ll be incredibly frank and honest and say that I do not do as much on-the-ground ocean activism as I’d like to do these days. I do participate the occasion stream clean-up and rally from time to time, but with a full-time job and a family including an active toddler, time is scarce and I’m […]
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