Going to the sea is a Minbari tradition in which an elder who has reached the end of their useful life on Minbar goes out into the sea of stars, to find a place where they may be of use before the end.[1]
When John Sheridan's life force from Lorien began to ebb in 2281, he took a Snub-nose Whitestar to Coriana VI, in a way following the tradition of "going to the sea".[2]