Ross wrote: "Do some of the spp found in these communities also occur elsewhere (ie, what is the percentage of endemics??)." Hi again, Ross I checked some literaure and web sites. Answer to your question is: 377 living species from hydrothermal vents of which >84% are endemic1 (for genera ~50% are endemic)are kown to date. To date 102 living species are known from cold seeps of which >32% are endemic to seeps but only 8% are also found at hydrothermal vents. Milan ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com