I know,I know. It's a grey plastic tube about 1/2" diameter and 10.5" long. Am I right? I can't see it that well from where I am. A closer pic might help, in fact any pic would help, don'tcha think.
Down in the bilge huh? Do you have livewells? Is it a hose for filling a bait tank? What kinda boat is this and yes, a pic would say a thousand words..