Seventy percent of the earth’s surface is covered in water.

Which may explain why succeeding in this world is such a sink-or-swim proposition.

New restaurant PassionFish has a good chance of staying afloat. Opening tomorrow, the sibling to DC Coast and Acadiana will serve aquatic delicacies from the around the world.

Test the waters with the Icelandic Arctic char, Hawaiian Kona Kampachi, Costa Rican mahimahi, or South African salt prawns. The extensive raw bar, lobster roll sliders, oyster shooters, and ceviche will have you hooked; reel it in with apple crisp or a key lime tart.

A floating glass staircase and floor-to-ceiling windows open up the space.

So you won’t feel stuck in a fish bowl.

PassionFish, Reston Town Center, 11960 Democracy Drive, at Explorer Street, Reston, Virginia (703-230-3474 or passionfishreston.com).