What is it?

Washed ashore last month on Third Beach. Any clue?

Growth along the  side. Indicating that it had been floating offshore for awhile.

Shrimp City

 

Full moon low tide, Newport docks.

Just astern of my friend's skiff in the photo above...

...was a congregation of  these shrimp swimming and clinging to the bulkhead.

 I caught some...

...and while I haven't ID them to species level- I think perhaps they were sand shrimp.  

Breeding? Feeding?