Shellfish

File: 2016-03-12 19.19.11.jpg (2MB, 2829x1590px) Image search: [Google]

2MB, 2829x1590px

Can we have a shellfish thread? Do these exist?

I just went clamming today, in Northern Washington. Miserably wet, pouring rain, 30mph winds, but we took home over 320 clams in our group. While washing some off in a net sack I came across pic related.

I showed family and friends, and stuffed it in my jacket pocket. Long story short, when I brought it back to camp I discovered two tiny crabs (each less than 1/4in big) and a living barnacle took refuge inside/on it.

Here are my questions:
What species crabs are they?
How big do they get?
Can I keep them alive?

Unfortunately, I wasn't able to get a picture of the crabs, since they quickly scurried deep into the shell. A brief description: light blue, even lighter underbelly, pearly white claws (?), pinkish around the edges. I'll see if I can get a picture later.

I did, however, snap several pictures of the barnacle and got a few vids, but still need to convert them to .webm (sorry about potato quality, used my phone). I'll dump them when I get the time.

Thank you all in advance, and enjoy this creepy so of a bitch.