synonym for the Irish Sea [Note: so wrote McHugh in the first edition of his Annotations to Finnegans Wake; but the annotation does not appear in the second or third edition. Was it an error?]
Tristram returned across the Irish Sea to Brittany
short sea: a nautical term for a sea with close waves
the watery element connects this, the first of seven clauses in the second paragraph of page 003, with riverrun, the first of seven elements in the first paragraph → the 1st of 7 elements in a second circuit of HCE's bedroom