Seamore’s, a pescatarian favorite in Nolita, opened a second outpost in Chelsea and with an underground rum bar. Follow the “Licker Bar” sign downstairs to enter a pseudo speakeasy sparingly decorated with a neon fish logo above the bar. But you’re there for the booze, not the decorations. You’ll find a selection of rum-centric drinks that extend the place’s beachy feel: mai tais, mojitos and the signature Coco-Loco, served in a fresh coconut. Other spirits, beers and wines by the glass are also available, plus a “seacret” menu of small plates to tide you over if you’re waiting for a table upstairs.