Can someone tell me what this is?

[Alvin Roberts]

I see this on the back of my boat by the plug but I don't know what it is for.

 

[davetnitro]

intake for livewell pump???

 

[BIGCBAG]

I would say intake for your livewell. Look inside your bildge and it should have a hose with a small pump connected to it.

 

[TritonGlenn]

It definitely looks like a livewell intake screen. Sometimes they unscrew or have some kind of snap on / snap off mechanism so that you can rinse them out - Like if they get scales or some other debris caught up in them when you drain your livewell.

 

[jon woodbury]

it is your livewell intake