Posts

November 18, 2014

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12:40 AM | Marine stream videos from #WorldParksCongress
While working in Sydney on the #‎WorldParksCongress‬, I’ve been helping the French Marine Protected Areas Agency with their Oceanplus webtv channel. Day 4 video updtae is now online for the ‪#‎WPCMarine‬ stream, focusing on useful & efficient MPAs and featuring UQ Global Change Institute Director Ove Hoegh-Guldberg, @envirogov’s National Parks Director Sally Barnes & more […]

November 17, 2014

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12:02 PM | Asking students to tell us about “the muddiest point”
Getting feedback on what was least clear in a course session. A classroom assessment technique that I like a lot is “the muddiest point”. It is very simple: At the end of a course unit, you hand out small pieces … Continue reading →

November 14, 2014

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7:28 PM | TGIF – Zoiks! Lionfish!
This extraordinary bit of footage shows quite the highest density of invasive lionfish I’ve ever seen.  I was talking to Luiz Rocha during the week and he tells me the footage was shot near Pensacola FL.  We agreed that neither of us had ever seen abundances like this in the natural range of lionfish.  We’re […]
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7:28 PM | TGIF – Zoiks! Lionfish!
This extraordinary bit of footage shows quite the highest density of invasive lionfish I’ve ever seen.  I was talking to Luiz Rocha during the week and he tells me the footage was shot near Pensacola FL.  We agreed that neither of us had ever seen abundances like this in the natural range of lionfish.  We’re […]
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1:34 PM | Equatorial Adventures - Episode 2: Action!
 We reached our first station three days ago at 5N - 110W around 5:40am. We are now in the Southern Hemisphere! We then stopped at 2N, 1N and 0.5N to do CTD casts and are doing the same south of the equator (more on why in a future post).  Craig inspecting our instruments on the frame  CTD stands for Conductivity - Temperature - Depth. We use this instrument to get the temperature and
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12:10 PM | What is the weight of air? An experiment I would never do with kids.
How to mess up kids’ understanding of the world with so-called “science experiments”. My colleague’s son recently went to a fancy-schmancy science thing. And what they learned there is “how to measure the weight of air”. So far so good. Here … Continue reading →
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2:30 AM | These Are A Few Of My Favorite Species: Gasflame Nudibranch
About 350 million years ago during the Carboniferous, a group of snails took a new evolutionary route, one that eventually resulted in a complete loss of the most defining characteristic of a snail—the shell. These shelless snails eventually acquire another set of traits and now the most colorful displays on the planet occur in this […]
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2:30 AM | These Are A Few Of My Favorite Species: Gasflame Nudibranch
About 350 million years ago during the Carboniferous, a group of snails took a new evolutionary route, one that eventually resulted in a complete loss of the most defining characteristic of a snail—the shell. These shelless snails eventually acquire another set of traits and now the most colorful displays on the planet occur in this […]

November 12, 2014

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11:46 PM | Fukushima radiation detected 100 miles from California Coast. Still not harmful.
The latest results from the Fukushima radiation citizen science project Our Radioactive Ocean have just been released. NO Cesium-134 has been detected on West Coast shores, but it has been detected nearly 100 miles off the coast of Eureka, CA. While this may seem worrying to some, it should not be. The amount of Cesium measured in the water […]
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11:46 PM | Fukushima radiation detected 100 miles from California Coast. Still not harmful.
The latest results from the Fukushima radiation citizen science project Our Radioactive Ocean have just been released. NO Cesium-134 has been detected on West Coast shores, but it has been detected nearly 100 miles off the coast of Eureka, CA. While this may seem worrying to some, it should not be. The amount of Cesium measured in the water […]
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12:54 PM | Pacific Adventures: Episode 1 - Cruising
 This first post has been particularly challenging to write. Science hasn’t quite started, watches aren’t really in place yet. But as this is the first long cruise for most of our group, this is also a time when we start learning about each other. For example, setting up a list of bets to keep the cruise socially entertaining, like, who will be seasick first and feed the fishes, who will most
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12:30 PM | Oceanographic concepts and language, reloaded
How we might misunderstand our students and therefore diagnose misconceptions where there are none. Imagine you are in an Earth Sciences class and your teacher talks about glaciers and how they are “retreating”. They probably also show you pictures comparing a very … Continue reading →

November 10, 2014

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9:14 PM | That Is Master Alex To You
It is with great joy that I announce that DSN’s Alex Warneke has successfully defended her Master’s thesis at San Diego State University on the effects of copper pollution on seaweed inducible defenses.  Give her love in the comments below
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9:14 PM | That Is Master Alex To You
It is with great joy that I announce that DSN’s Alex Warneke has successfully defended her Master’s thesis at San Diego State University on the effects of copper pollution on seaweed inducible defenses.  Give her love in the comments below
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4:08 PM | 10 Awesome Facts About Cuttlefish
1. Cuttlefish are cephalopods, not fish. Cephalopods include octopus, squid and nautilus. 2. Cuttlefish, along with most cephalopods, are the ocean’s most intelligent invertebrates. 3. Cuttlebone, found in the body of a cuttlefish, is used by pet birds to get calcium. 4. Cuttlefish have green-blue blood and 3 hearts! 5. A cuttlefish’s camouflage is so […]
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12:38 PM | Using the “jigsaw” method for practicing solving problem-sets
A method to get all students engaged in solving problem sets. A very common problem during problem-set solving sessions is that instead of all students being actively involved in the exercise, in each group there is one student working on … Continue reading →
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9:37 AM | Filming sights of Sydney for Agence des aires marines protégées
I’ve been showing one of the Agence des aires marines protégées (French Agency for Marine Protected Areas) video team around Sydney over the past few days, filming at the Sydney Fish Market, Bondi Beach, Circular Quay and marine-focused touristy spots. Perfect weekend for it and the trip across to Taronga Zoo (pictured) provided some great […]

November 09, 2014

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11:35 AM | These Are A Few of My Favorite Specie: Carrier Shells
The carrier shells of the family Xenophoridae are the most remarkable bunch of snails.  Both their common name and their Latin name give away their uniqueness.  Xenophoridae in Latin actually translates to foreign carrying.  A carrier shell will cement stones, other shells, sponges, and other debris to its shell.  The individual pieces of foreign matter […]
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11:35 AM | These Are A Few of My Favorite Specie: Carrier Shells
The carrier shells of the family Xenophoridae are the most remarkable bunch of snails.  Both their common name and their Latin name give away their uniqueness.  Xenophoridae in Latin actually translates to foreign carrying.  A carrier shell will cement stones, other shells, sponges, and other debris to its shell.  The individual pieces of foreign matter […]

November 07, 2014

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6:47 AM | Diffraction of light
Today I’m playing with the sun. As I mentioned in the sun dog post already, I recently went on the ferry from Kiel to Gothenburg. And I had plenty of time to watch the sun rise and set. One thing … Continue reading →

November 06, 2014

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1:54 AM | Pacific Adventures: The Equator - Episode 0
 The glamour of an ocean cruise, the paradisiac destinations, the lavish food, the spas, the luxury, the relaxation, the fun times... Forget all that.   This episode sets the scene for what a cruise is for us oceanographers. If you ever meet one of us on a plane, and we tell you we are going on a cruise, what we are embarking on has little to do with a traditional cruise ship.   Forget
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1:31 AM | From Hardliners TV star to rusting away at a Sydney pier
Since digital television hit Australia a few years ago, the influx of new channels an increase in airtime has not only surprised audiences but broadcasters as well. Channel 10’s digital offering, with the bland and unhelpful title ONE (since I’ve never seen it linked to an actual channel 1 on any digital TV) showed early promise […]
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12:15 AM | This is now my favorite boat ever.
I do not know how I lived so long without knowing about The Martini 1.5 Experimental Boat. I MEAN WE SHARE THE SAME NAME. This full-suspension boat can tackle big waves, remain level and I am pretty sure just about eliminate seasickness completely (chronic seabarfs….I haz it). And the concept behind the name…ABSOLUTELY BRILLIANT. Not long […]
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12:15 AM | This is now my favorite boat ever.
I do not know how I lived so long without knowing about The Martini 1.5 Experimental Boat. I MEAN WE SHARE THE SAME NAME. This full-suspension boat can tackle big waves, remain level and I am pretty sure just about eliminate seasickness completely (chronic seabarfs….I haz it). And the concept behind the name…ABSOLUTELY BRILLIANT. Not long […]

November 05, 2014

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6:37 PM | We don’t know the ocean
This is not the ocean: This is not the ocean: Indeed, even THIS is not the ocean: Before you start thinking that the folks at DSN are losing their marbles, bear with me!  The truth is that none of these three all-too-familiar and quintessentially marine images reflects the actual reality of what most of the […]
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6:37 PM | We don’t know the ocean
This is not the ocean: This is not the ocean: Indeed, even THIS is not the ocean: Before you start thinking that the folks at DSN are losing their marbles, bear with me!  The truth is that none of these three all-too-familiar and quintessentially marine images reflects the actual reality of what most of the […]
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4:33 PM | The rainbow-covered animal with a dark side
Watching animals eat is like my biology crack. I don’t need it, I don’t have to do it, I don’t even always like it, but there’s just something about critters noshing on one another that renders me wonderstruck. And nothing does it for me like the comb jelly Beroe: So let’s start with the obvious […]
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4:33 PM | The rainbow-covered animal with a dark side
Watching animals eat is like my biology crack. I don’t need it, I don’t have to do it, I don’t even always like it, but there’s just something about critters noshing on one another that renders me wonderstruck. And nothing does it for me like the comb jelly Beroe: So let’s start with the obvious […]
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6:51 AM | Tidal elevations and currents in Fowey, Cornwall
Tides in Cornwall. The other day we talked about a very simplistic models of tides in a glass, and how the high tide and low tide travel as a wave around an ocean basin. This isn’t really a news flash … Continue reading →

November 04, 2014

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7:07 PM | What do baseball and fishes have in common?
Here’s the third in our series of guest posts from California Academy of Sciences ichthyologist Dr. Luiz Rocha I am not going to lie to you, before moving to San Francisco I barely knew the rules of baseball. But during the mere three years that I have lived here, our local team (the Giants in […]
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