Private Dining

H2O: Seafood and Sushi in East Islip has the charm of a cozy New England fish house married with the luxury a world class sushi and raw program can bring. Our upstairs dining room is the perfect space for any private event.

Before placing your order, please inform your server if a person in your party has a food allergy.

H20 Topside

H2O Topside, our second floor, can host up to 50 guests for any occasion, lunch, brunch or dinner. The energy of the Main Dining Room and Bar rise up the open stairwell while the sounds are muted by the soft surfaces that surround the room.

Your Party Is Waiting

Team after-parties, receptions, groom’s events, birthdays, showers, rehearsal dinners.


H2O: Seafood & Sushi’s Bar is the centerpiece of our Main Dining Room. Recognized for its beauty, as well as its depth and breadth of our world class beverage program, the bar offers multiple options perfect for your event. We can tailor a cocktail list that reflects your theme or we can cater to your guests’ needs with selections from extensive beverage and wine lists.

Attention to Detail:
No stone is left unturned at H2O and nothing is left to chance. Recently opened in 2016, H2O has the backing of the experienced team at the Bohlsen Restaurant Group who have been hosting and executing many of the seminal moments of our guests’ lives. Let that experience work for you.

H2O boasts an experienced and professional service staff, trained by the team at the Bohlsen Restaurant Group. Let our team of service professionals take the pressure off of you, the host, and allow you to enjoy the party you had envisioned.

H2O’s award-winning cuisine goes well beyond our reputation as Long Island’s premier seafood dining destination. Enjoy steaks, chicken and world class sushi as well as a wide variety of seafood from across the globe alongside selections from our local waters. Both Lunch and Dinner menus offer a diverse culinary experience for each of your guests.

Sunday   11am–2:30pm

Friday–Saturday   4pm–11pm
Sunday   3pm–9pm

Uber Eats
Friday   4:00pm–12am
Saturday   4:00pm–12am
Sunday   11am–10pm