Jim describes his tattoo:

“a design of Opabinia regalis, a Burgess Shale fossil dating from the Cambrian. It has some pirate imagery, including the hourglass, skull, and nukes. As an evolutionary dead end, Opabinia reminds me of the diversity and tenacity of life through difficulty (how do you put ‘Ad Astra Per Aspera’ into fossil terms?), and plus it looks awesome.”

Carl: Opabinia is the weirdest of the weird, a creature with five eyes and a single appendage sticking out of its head like the arm of a backhoe. It existed half a billion years ago, and its fossil remains were preserved exquisitely in the Burgess Shale formation of Canada. Because it looks unlike anything alive today, it can seem like