Dear Juan Carlos,

You can also search the following databases

http://www.marlin.ac.uk/biotic/

http://polytraits.lifewatchgreece.eu/

http://www.marinespecies.org/

and the article

Queirós, A.M., Birchenough, S.N.R., Bremner, J., Godbold, J.A., Parker, R.E., Romero-Ramirez, A., Reiss, H., Solan, M., Somerfield, P.J., Van Colen, C., et al. (2013). A bioturbation classification of European marine infaunal invertebrates. Ecology and Evolution: 3958-3985R

M.

Dear Maria

Thank you for your help

Have a nice week.