Please feel free to share with your friends and family where you learned something new about elephant seals today!
Download the pdf here. I’ll post the answers next Monday. First person to comment with the correct answers (here or on Facebook) I’ll send a copy of the Smithsonian’s Whales, Dolphins and Porpoises (Flexibound).
Also, if I’ve missed a state with a marine mammal “symbol”, please don’t hesitate to let me know.
Please feel free to share with your friends and family where you learned something new about whales and dolphins today!
Well, it’s been quite some time since I’ve posted and it’s all due to an adorable little distraction – my son was born in early January. The addition has been wonderful and fairly stress free (keep your fingers crossed!). In fact, I have to say this time around my biggest stress was picking out a name. We had a boy name chosen, but not a girl name, so the decision was easy. However, it got me thinking about what juvenile marine animals are called. Here is a list of ‘baby’ names of over 25 well-known ocean animals. After all, you don’t accidentally want to refer to a juvenile shark as a calf or a juvenile eel as a spet, do you? If you can expand or elaborate on the list feel free to share in the comments box.
Flamingo, gull, heron, penguin: Chick
Crane: Chick or craneling
Cod: Codling, hake, sprag, or sprat
Most fish: Fry or fingerling
Blue crab: Larva
Clam: Larva, chiton, or littleneck
Horseshoe crab: Larva
Sand dollar, sea urchin, sea star: Larva or pluteus (free-swimming stage)
Dolphin, manatee, porpoise, whale: Calf
Otter: Whelp or pup
Shark, seal, sea lion: Pup
Walrus: Cub or pup
What this short video for some cute pictures of featured juvenile coastal and marine animals. Which one is your favorite?
For more information:
It’s time for another “Test your knowledge” quiz. This time it’s brought to you by page 211 of one of my favorite books, Seaside Naturalist (written and illustrated by Deborah Coulombe). Here’s a true/false quiz all about those marine mammals we all know and love … well, take the quiz and see how well you know them. First 3 people to submit all correct answers below as comments (before I post the correct answers in a week) will get a free DVD of Ocean Frontiers.
1. Whales sweat profusely while diving.
2. The blue whale is the largest animal ever known on Earth.
3. Whales can drown.
4. Whales can be told apart by the way they spout.
5. Whales never sleep.
6. Baby whales are born tail first.
7. When whales breach, they jump completely out of the water.
8. Whales spout by blowing water out of their blowhole.
9. In Japan, dogs eat whales meat.
10. Manatee are the only vegetarian marine mammals.
Know anyone that might want to share a passion a marine science, environmental education, or ocean conservation by writing for Beach Chair Scientist? Guest posting is always welcome!
It all started recently as my 2 year-old showed those tendencies towards becoming a picky eater. I embarked on a supermarket safari for proteins and soon enough I found myself in the canned tuna aisle. Have you been there lately? It’s a little overwhelming with all of the labels. I usually just go for the salmon for the additional omega-3s, but I had a feeling the toddler would turn that down. Also, I am all about rites of passage and isn’t canned tuna with mayonnaise on toast right up there with peanut butter and jelly and macaroni and cheese? Given that I do care, especially with the recent findings of an Oceana report that states 1 in 3 fish are mislabeled, the nerd in me had to navigate the meaning behind all those ‘eco-safe’ labels found on canned tuna.
Here’s some surprising truths behind the fables about the ‘dolphin-safe’ label you’ll need to know before baking your next casserole:
1) The U.S. wouldn’t sell anything that’s not ‘dolphin-safe’ – label or not. While it’s true that the U.S. has the most restrictive definition of what it means to be ‘dolphin-safe’ it’s also true that canned tuna is the #1 seafood import in the U.S. The internationally accepted definition of ‘dolphin-safe’ is “tuna caught in sets in which dolphins are not killed or seriously injured,” but the U.S. requires that “no tuna were caught on the trip in which such tuna were harvested using a purse seine net intentionally deployed on or to encircle dolphins, and that no dolphins were killed or seriously injured in the sets in which the tuna were caught.” Unfortunately, if we’re rarely eating tuna from the U.S. we can’t say how it’s caught.
2) ‘Dolphin-safe’ labels are designated by the government. I was shocked to realize that its independent observers (i.e., private organizations) making claims to what is ‘dolphin-safe’. But, then I remembered that tuna are an especially difficult species to manage given that they migrate all over the world. The good news on the horizon is that during his State of the Union address in January, President Obama mentioned the U.S. will begin negotiating a free trade agreement (FTA) with the European Union. What does this have to do with tuna fisheries? Well, apparently the talks for the FTA would include discussions on non-tariff barriers. Non-tariff barriers include “things like labels indicating a product’s country-of-origin, whether tuna is dolphin-safe, or whether your breakfast cereal has genetically-modified corn in it.” The need to be more consistent as to how we label tuna was also acknowledged by the World Trade Organization (WTO). The WTO noted that, “while well-intentioned, the ‘dolphin-safe’ labels are deceptive to consumers and quite outdated”. Also, according to the Campaign for Eco-Safe Tuna, “There’s no denying that more than 98% of the tuna in the U.S. market today is sourced from unmonitored and untracked fisheries where thousands of dolphins are killed every year.” That’s a frightening statistic if you’re trying to make the right choice on what can of tuna to purchase.
3) If it’s ‘dolphin-safe’ it must be safe for all marine life. Let’s cut to the chase here. Canned tuna that is troll or hook-and-line caught is the best choice for a conscious consumer. Other methods of fishing for tuna (e.g., backdown technique, purse seines) have been shown to cause long-term stress to dolphins (leading to their eventual death), including heart and muscle lesions. You might also be disheartened to realize that sharks, billfish, birds, and sea turtles (see image) are often the unintended catch (known as ‘bycatch’) of fishing for tuna. The fish aggregating devices (FAD) commonly used to catch tuna are known as some as the most destructive fishing practices man has ever used.
Where does that leave me in the decision of what type of tuna to purchase for my family? As I mentioned, choosing hook and line (also known as ‘pole-caught’) canned tuna is the most sustainable choice. Fishing for tuna with hook and line 1) enables fish that are too small to be returned to the ocean, 2) practically eradicates any bycatch, and 3) ensures the ocean ecosystem to remain intact eliminating the potential loss of biodiversity. Be careful though since ‘line-caught’ can mean using a longline to catch tuna. However, this method produces ample bycatch as well.
Please feel free to comment below or email questions on this article to Ann McElhatton, Beach Chair Scientist, at email@example.com.
It’s a harsh reality, but even our choice of phone case or mattress may not be an easy one if we’re concerned with how we affect our environment. In this 5th installment of “We affect what goes in our watershed” (see posts on fertilizers, marine debris, petroleum, and pharmaceuticals), it’s all about PBTs (persistent, bioaccumulative and toxic) chemicals and how they are a silent threat to many marine mammals, and other top predators in the sea. These toxic threats get processed into their blubber and vital organs by way of bioaccumulation (see image). Susan Shaw, Director of Marine Environmental Research Institute, recently published that the bioaccumluation of North Atlantic harbor seals and noted that “at very high exposures PBTs can impair a mammal’s immune system, making it less capable of fighting off deadly diseases”.
What are the sources of these toxins?
- Mattresses, upholstery foam, and the plastic casings for electronics
- From the air or washed down the drain from foam, plastic, or fabric slough off our beds, couches, curtains, and televisions
- Leaked from manufacturing plants, runoff from cropland, or leach out of landfills.
Positive news is that manufacturers and importers agreed in 2010 to a phase-out of materials using these substances in 2010, declaring that sales will completely be irradiated at the end of 2013. In the meantime, here’s a list from the Environmental Working Group on how to reduce the exposure of the chemicals in your home, also I found a list of PBTfree products for home construction and cars from INFORM that .
I guess the question is now, what are some things that we can do to remind our family, friends, and neighbors that what we put in our drains and local waterway matters to the entire ocean ecosystem?
Interesting details on how dolphins communicate came out this week. 2006 brought us research that unique dolphin clicks can be interpreted to include a name and some basic information about the individual marine mammal (see image). But even more recently, research uncovered that dolphins call each other by name, especially when they’ve become separated from one another. It was stated that other than humans dolphins are the only animals known to do this!