In an Email from Johnny 31st December 2007 :
"We have another visitor staying just down the road at the Turtle ponds - a sea lion! - Turned up last week and seemingly happy to just bask on the rocks and dip in and out of the water.
It`s been around 5 days so far and we`ll wait and see if it stays.
Loads of folk down each day to look at him and he`s not the least bit concerned.
I reckon he`s followed a turtle by mistake! "
For more information on Sea Lions in general see the Sea Lion entry on Wikipedia, and for this sea lion in particular read this article Ascension : Conservation Weekly - Pinniped Visitor! from The South Atlantic Remote Territories Media association.