"Green Fire" by Robert Varhees (2006) Port of San Diego Tidelands Collection.
I went to their web site & apparently there are/were 30+ of these sculpture pieces along Harbor Drive. I'll have to be more observant, because I've just seen 4 of them.
"Orange Tree" sculpture by Guy & Ellen Mayenobe (2007)
and the "Fish Tree" by Zbigniew"Ben" Pinget & Toby Flores (2005).
They are surrounded today by construction fences & hard to really appreciate. Hopefully when the construction is finished, they'll be polished up a bit and everyone will be able to see them. Can you spot the moon in each of these?