Puerto Vallarta small animal & nudibranch report

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Scuba Diver Mexico

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For those of you diving in the area who are interested in observing and learning more about small animals, and more especially nudibranchs and their behavior please check this dive report.

Puerto Vallarta and the bay of Banderas has become popular with divers lately. This is especially so in the winter months when divers visit from the USA and Canada.

The area is not the Caribbean in any way. In the winter, temperatures drop even as much as southern California waters and also the visibility can be reduced due to plankton blooms in the upper layers. The bay is very deep and thus has cold water upwellings making it colder than the waters north and south. Some big animals are around, such as Mantas and humpbacks (you won't see them underwater too often due to the low viz though) but there is still plenty more very interesting small stuff to see that is absent in the Caribbean. For small animals the winter months very much surpass the warm water months.

This is an area especially well suited for you macro photographers who have seen all the small stuff and the larger nudibranchs in say California or British Columbia but wish to see / photograph more tropical species and observe how they behave. The area is also great for shooting macro video.

Several guides have been published in recent years that include many of the small species to be found in the bay.
 
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Last week a good friend was visiting down in Puerto Vallarta from Southern California. She is a good amateur photographer shooting a Canon EOS 20 D in a Subal Housing with two Ikelite DS 125 strobes.

The water temp was not as cold as it is supposed to be this time of the year (around 68 -70 F, so no dry suit this time) and the viz was 20 to 40 ft in Arcos, Majahuitas and Marietas. Los Arcos even though sometimes crowded with snorkelers in the morning can be really nice in the afternoons. This is the most biodiverse dive area in the whole bay regarding sea slugs (nudibranchs), lots of small animals were seen those days. Marietas has some areas excellent for macro photography and nudibranch Tambja Abdere (one of the most common sea slugs during this season) was seen often there and also in Majahuitas. Some very timid Mantis shrimp were photographed in the Porites hard coral also at Marietas.

She did not bring along her wide angle lens and dome for obvious reasons, and maybe this is just the reason why two Mantas showed up in Majahuitas, one smaller chevron doing loops while feeding and one really large black manta that hung around very close while pictures of the small stuff were being taken. What a great combination !!

Here are some of the images from last week

Allison Vitsky (vitskypenfoundUW) : photos : Bahia de Banderas, Puerto Vallarta, Winter 2009- powered by SmugMug
 
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Great pictures! As a nudi fan, the Elysia diomedea shot could be my favorite, I like them all. Thanks for sharing, I have not seen any of those nudibranch species before.
 
Thanks so much for the beautiful pictures! I would have never thought of PV as a place to look for these fascinating creatures.
 
This is one of the small animals present in many of the dive sites in the Bay of Banderas at this time.

YouTube - Nudibranch Tambja abdere feeding

It is failry large (up to 50 mm) compared to other nudibranchs that you find in the area thus making it easier to spot for divers with less experience . It usaually feeds on a blue green briozooan (Sessibugula) that makes the background on photos look awesome.

So if you see Sessibugula covering some rocks make sure you look around a little longer untill you spot some Tamjbas.

Tambja abdere on Flickr - Photo Sharing!

http://vitskypenfounduw.smugmug.com/gallery/7185423_ko477#461402513_4JcCm-X3-LB

Nude-on-Blue-Deux on Flickr - Photo Sharing!

Tambja abdere on Flickr - Photo Sharing!

This animal is very photogenic so dont forget to take your camera and strobes down on every dive


Happy diving !
 
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As the water is getting colder in the bay of Banderas these days and viz stays low in the shallows it is time to stick around the bottom without swimming too far.

Who knows ?? one might find a new species, or at least something never seen before in the area !!

Opisthobranch of the Week is Trapania sp.


Don’t forget to look closely all around the rocks and of course take a picture to find out what it is.
 
These coming weeks, if you are planning to be in Puerto Vallarta, or if you want to go down and bring out your macro cameras, Alicia Hermosillo will be diving in the area.

The water is not so cold yet so a 5 mm suit and hood will probably be enough.

Alicia is coauthor of several guides for small animals / nudibranchs and is happy to share her expertise while guiding in English or Spanish for photographers or small animal fans in some of the popular dive sites of the bay.

The Sea Slug Forum - Eastern Pacific Nudibranchs. A guide to the Opisthobranchs from Alaska to Central America
The Sea Slug Forum - Opistobranquios de Mexico
Alicia Hermosillo Nudibranch Photographer Nudi Pixel
YouTube - El mundo microscópico del Mar de Cortés


Alicia is also a member of SB with the name "Ali" and has an email alicia_hg@prodigy.net.mx or gueri25@hotmail.com

Contact her if you would like to see the underwater world of the bay in a totally different way
 
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This weekend was very good for observing and photographing small animals.

In Majahuitas, we had fun finding orangutang crabs, skeleton shrimps and mantis shrimps. Our mantis are so small that you can safely make them strike your pencil or even finger (this is not so with the huge Indopacific cousins). We also observed many skeleton shrimps climbing up and down hydroids. Plus, sea apples, all colors and sizes, everywhere.

For the main dish, nudibranchs, I could so tell it is winter now. We found many of the uncommon ones, like Bajaeolis bertschi, Flabellina cynara and the Arcos endemic Flabellina fogata.

Grab your magnifying lens, this is the best time for this.

Vallarta febrero 2009
Vallarta febrero 2009 - a set on Flickr

If anybody wants further information on the biology and behavior of any critter you find, please feel free to write me.

Happy diving

Ali
 
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This looks like a wonderful place for someone who likes small stuff and nudis -- namely me!
 
https://www.shearwater.com/products/teric/

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