A miniature decapod mobster
His pistol claw poised
To pop off a loud noise
and scare away mean arthropodsters
Here is limerick #2, specifically about Alpheus heterochaelis, the big-clawed snapping shrimp.
Live together in sweet symbiosis
The crab digs the hole
The shrimp stands patrol
Of their “marriage” they’re making the mostest
It's not uncommon for snapping shrimp to have symbiotic relationships with other animals- vertebrates (gobies, eg.) and invertebrates alike (even anemones!). In areas of the coast where big-clawed snapping shrimp inhabit oyster reefs, they often share burrows with black-clawed mud crabs (see the crab in the hole?). Apparently, Alpheus is not able to dig nice burrows around the hard oyster beds like Panopeus can. The crab, in return, gets a personal warning alarm in the form of loud popping.
So there you go Kevin. I hope the two limericks and my crappy drawing made up for no invertebrate sonnet.