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Species Covered


Ascidiacea (commonly known as the ascidians or sea squirts), is a wide class in the subphylum called Tunicata (also known as Urochordata). Ascidians are present throughout all over the world's seas and oceans. These species are characterized by a tough outer "tunic" made of the polysaccharide cellulose.



Find ascidian gene models showing nucleotide or protein sequences similarity to your gene of interest

Genome Browser


Visualize gene models and other functional annotations in their genome context

Genome Annotations


Explore ascidian gene models, cis-regulatory sequences, and other genomic features based on their functional annotations



Explore the identity, morphology and relative position of anatomical territories of developing ascidian embryos and larvae

Gene Expression & Function


Explore gene expression profiles, cis-regulatory sequence activity and the effect of perturbations in gene function



Search the ascidian literature for authors, genes, biological processes

What is 3D Virtual Embryo?

The 3D Virtual Embryo uses interactive three dimensional digital embryo reconstructions to display information from the database as well as to enter into the database quantitative descriptions of the geometry of individual embryonic territories and their interactions...



ANISEED switch to secure http protocol (https)

Although you should not feel any difference using the website with the new protocol, just a note that we switched to https. The only difference is that instead of our URL http://www.aniseed.cnrs.fr now it is https://www.aniseed.cnrs.fr, all the existing links and URL-s you used should be automatically redirected. If you experience any problems please contact us.ANISEED Team


Interruption of service ANISEED

Due to maintenance of the network infrastructure in the institute there will an interruption of service of ANISEED server on Saturday 25.02. from 5:00 am CET to 17:00 pm CET. Thank you for understanding. ANISEED team


Aniseed Server Migration

We will migrate the Aniseed server on Tuesday 20.12, if you encounter any difficulties, please contact us via the Feedback interface. Thank you for understanding. ANISEED team


Interruption of service ANISEED

Due to maintenance of the network infrastructure in the institute there will an interruption of service of ANISEED server on Monday 14.11. from 3:00 am CET to 10:00 am CET. Thank you for understanding. ANISEED team


Two-color In Situ Hybridization data are now supported

ANISEED now supports two-color in situ hybridizations. ANISEED Team


New ANISEED team member

We are so excited to have a new force in our group. We believe that her skills and talent will help all of us in making ANISEED reach new heights. Welcome to ANISEED team Justine Dardaillon!


Interruption of service ANISEED

Due to maintenance of the network infrastructure in the institute there will an interruption of service of ANISEED server from Wednesday 13.4. 20:00 CET to Thursday 14.4. 9:00 CET. Thank you for understanding. ANISEED team


Major database update

ANISEED now supports 6 Ascidian species: Ciona intestinalis, Ciona Savignyi, Phallusia mammilata, Halocynthia roretzi, Molgula oculata and Botryllus schlosseri. All genes are functionally annotated. The GBrowse additionally supports Phallusia fumigata, Halocynthia aurantium, Molgula occulta and Molgula occidentalis.


KH2012 Orthologs

KH2012 orthologs have been added to the download section


Functional annotations

Gene Ontology and InterPro annotations added to the download section.


Fate/territory search improved!

search works faster with more reliable results


Short interruption of service 21. Feb 2014.

We are sorry to inform you that on Friday 21st of February from 7:00 to 13:00( French time)  due to internal networking maintenance ANISEED server will be temporarily unavailable. We apologise for any inconvenience that this may cause, and we appreciate your understanding.


Merry Xmas to everyone! We may be less responsive in the next couple of weeks, but keep sending feedback on bugs and desired features.


The Aniseed Team is evolving. Good Luck to Cyril Martin, our main developer over the past three years who is leaving the project. Matija Brozović is taking over.


Expression Search by Fates and Territories is now fully functional.


The Botryllus anatomical ontology was added


Various bugs corrected in response to user feedback. Thank you for your help.


Welcome to Aniseed