3 Marine Diatoms

[75RR]

Plan 40x/0.65, DIC, 210µm, 16 image stack in Photoshop
Plan 40x/0.65, DIC, 200µm, 16 image stack in Photoshop

Plan 40x/0.65, DIC, 60µm*, 18 image stack in Photoshop and
Plan 40x/0.65, DIC, 60µm*, 11 image stack in Photoshop
*(Positive and negative bias of the same diatom)

[Hobbyst46]

As usual - very attractive creation! there seems to be a reach variety of marine diatoms on the western side of the great sea.

[75RR]

Thanks Hobbyst46 - there does seem to be more variety in the sea and some of them also appear to be larger than the ones I have found in fresh water.
Are you near the coast?

there seems to be a reach variety of marine diatoms on the western side of the great sea.

I am in Spain, my sea is the Mediterranean.

[coominya]

Nice captures 75, so much detail I have to keep reminding myself they are microscopic organisms and not larger subjects. I look forward to the day I buy the dedicated camera for my scope.

[KurtM]

Those are lovely shots! How on earth do you manage to get stacks of living Pleurosigma and friends? The ones I see are far too active.

I'm still trying to find time to collect and observe some diatoms, myself, but I'll get there eventually.

[75RR]

Thanks coominya and KurtM

How on earth do you manage to get stacks of living Pleurosigma and friends? The ones I see are far too active.

After a few days the 'smelly' sea water has both me and the diatoms on our knees so to speak ;)
Actually keep the jars in a small cooler - add frozen ice packs to it to keep it cool - lasts longer that way.
Hate throwing away a productive sample.

Also thanks for confirming the diatom ID of the first image: Pleurosigma

Not sure on the second.

Think the last one is probably Triceratium sp.

[vasselle]

Bonjour
Très belles images
Merci pour le partage
Cordialement seb

[Hobbyst46]

Thanks Hobbyst46 - there does seem to be more variety in the sea and some of them also appear to be larger than the ones I have found in fresh water.
Are you near the coast?

there seems to be a reach variety of marine diatoms on the western side of the great sea.

I am in Spain, my sea is the Mediterranean.

Yes, my sea is the eastern coast of the Mediterranean, and I am pretty near it.
When I first collected marine algae and stored them in seawater in closed jars, at ambient temperature of around 25, within 4-5 days the stench was unbearable. So, if I will study live samples, I will adopt your idea and keep them in a refrigerator.
So far I have concentrated on cleaning marine diatoms and the diversity is much more than in artificial freshwater ponds. But "my" marine diatoms are neither circular nor triangular nor sigmoidal...