Flatworms and Ice Spikes – Yikes!

Posted in Under the Sea on January 14th, 2011 by MadDog
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I can remember seeing ice spikes before, but I never had an opportunity to capture a photograph of one. A few days ago I opened the freezer door to get some ice and I got a surprise also. One of the cubes was topped by a perfect little ice spike. Here it is:

I’ve read that the purity of the water is a key factor in the formation of ice spikes. My water here at home is all rainwater which is stored in a big cement tank under my front porch. I suppose it is relatively pure, as there would be no dissolved minerals as are found in ground water. The spikes form when the water is freezing. If conditions are just right, they grow in the final stage of cube formation. Since water is one of those rare and peculiar substances which actually expand when freezing instead of contracting, the little bit of water that is finally freezing keeps expanding and the only place it has to go is up.

I’ll show you a few shots from our dive up on the wall at Blue Blood last Sunday. It was Flatworm Day, but I’ll get to them later. While we’re on the subject of strange looking things, here is a Bubble Coral (Plerogyra sinosa):

These look like balloons, but they feel like . . . nothing! They are so incredibly delicate that I don’t see how they survive. If you fiddle with the polyps they contract and leave a razor-like skeleton exposed.

Here is one of the many flatworms which we saw. I have never seen so many individuals and so many different species in one place. It’s a little hopeless for me to look up the species name, so I won’t bother:

I’ll be showing images of the other species which we found over the next few days.

This coral shot has a wealth of detail in it. It’s worth a click to see the delicate structure:

I’ve uploaded it at a larger than usual resolution so that it can make a good desktop background.

This is one of the largest colonies of this reddish coral that I have seen:

Finally, I’ll throw in a Flabelina  genus nudibranch. This is one of the better shots that I have of these. They are only about 30 mm long, so it’s difficult to get a really good close up:I don’t know where this depression is going. There seems to be no bottom. At least I’m still mostly functional. I get up and go to work except on days when I’ve notified the office staff that I have something else going on or I have urgent personal things to which I must attend. I socialise, I write. In short, to outward appearances I seem to be relatively normal. Inside smoulders a train wreck. In this heap of rubble the fire is spreading. I’m still rejecting drugs, because I still believe I can manage without and I don’t want to trade what I think is a manageable situation for one which lasts for an indeterminate length of time and may or may not help me. Furthermore, at the end of any treatment, I’d be left with the problem of getting off the drug. This can sometimes cause its own problems.

Even as bad as I feel now, as I look back over the last four months I have to acknowledge that I can mark progress month by month. Some of it is very significant progress. I’m sleeping much more easily and the nightmares have relented. The panics have receded into the dark corners. I sometimes feel those cold fingers reaching out, but they no longer pull me to the floor. Social gatherings have become easier to tolerate and I can sometimes feel good for an entire evening. Suicide no longer seems like an option. That’s a lot of improvement.

My friend Alison Raynor just suggested to me that I should start concentrating on how much I’m going to enjoy my trip to Australia. I think that’s good advice.

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