SearchResearch Challenge (7/6/16): Where's the ship in the pic?

Sometimes a photo doesn't just give up its secrets. 

In this week's Challenge, I heard a great story about a nearby place, and went to visit it.  Somehow, I missed the thing I was sent to find.  As you know, sometimes you have to search a bit to learn what all is going on. 

Here's a photo I took on June 30th.  I took it because I'd heard there was a concrete ship somewhere near here... and that surprised me.  A ship made out of concrete?  How would that ever work?  

But I drove to the designated place, and didn't understand.  Where's the ship in this image? 

A mystery at a beach in an undisclosed location.  If you want the original photo, here's a link to it.

The story I heard about this ship was (A) it's somewhere near here, (B) it's made of concrete, and (C) it wasn't the only ship made out of concrete!  Really? Let's turn these questions into this week's SearchResearch Challenge! 

1. In the above photo, where's the ship?  More specifically, what's the name of the ship? 

2. Were other ships made of concrete by the same outfit that made this ship?  If so, what are their names and where are they now? 

3.  I DO know that this area is popular with sharks.  What kind of sharks would be here?  Any recent sightings?  (I ask because I was thinking about going for a quick dive here.  Should I?)  

(and... an extra credit Challenge) 

4.  Not only are sharks somewhere nearby now, but apparently they've been in this area for a loong time.  What evidence can you find that sharks have been near here for a long time? 

This is a fun Search Challenge.  (Let's put it this way, I had way too much fun answering these Challenge questions.  I suspect you will too.)  

Search on!