It didn’t take long to be scuba diving back in Kostrena, Croatia again. The weather was nice and not too hot. Although the visibility was quite good there were a lot of particles in the water. I guess this was due to recent storms. It did interfere a bit with my photography but it was all good practice for me.
This time I did 3 dives, all over 1 hour long.
As previously, there were a lot of fish. This time though I didn’t see as many nudibranchs as previously.
Sea slugs and anemones
I will start with the sea slugs section.
The next one is Flabellina pedata.
And a couple of Flabellina ischitana.
An interesting fact I learned recently is, that some nudibranchs use parts of their food for their defense mechanisms in interesting ways. A good example is the Flabellina species with its ability to incorporate nematocysts (the stinging cells) from their food for self-defense.
The last of the sea slugs is the Thuridilla hopei.
The next image is quite interesting. It is an example of a nudibranch egg mass.
While on the subject of stinging sea animals, there are quite a few organisms in the sea that have that ability.
A good example of this is the anemone. First is the picture of a golden anemone (Condylactis aurantiaca) with a close-up photo. Following is the picture of a fat anemone (Cribrinopsis crassa). The last one is a picture of the cylinder or colored tube anemone (Cerianthus membranaceus). They can come in a wide array of colors.
I decided to take some pictures of the more common species that are everywhere and are usually ignored.
A good example is the hermit crab. The ones in the pictures should be Pagurus anachoretus.
Next a few examples of older juvenile damselfish (Chromis chromis). You can tell how old they are by their color. They start with a beautiful iridescent blue which they slowly lose and finally turn dark gray.
Following is a close-up of a tompot blenny (Parablennius gattorugine). This one was quite shy. Sometime they can be quite patient and will stay out in the open for quite some time.
And the last picture the red comb star (Astropecten aranciacus).
Overall it was another great day scuba diving in Kostrena. It is interesting how things change in just a few weeks.
I am now quite sure I will be back soon.