It's a grate.
When it comes to drainage grates, everything heads to the sea around here. That said, we must be on alert, as to what flows through these openings. Why did I waste my time photographing this? I liked it. Simple as that. Liked the design. Liked the color. Liked the rust. There'll be no Pulitzer Prize for Featured Photography coming my way for this one. I just like it.
Remember: there is no explanation needed for taste.
And that's the name of that tune!
Ain't it grate!