Enable JavaScript to run this app.
Skip to main content
OpenTable logo
H2O: Seafood & Sushi, Smithtown, NY

H2O: Seafood & Sushi

4.8
4.8
4376 Reviews
$31 to $50
Seafood
215 West Main Street, Smithtown, NY 11787

Make a reservation

2 people
7:00 PM
Booked 8 times today
Experiences are available.
  • Good for special occasions
  • Neighborhood gem
  • Great for creative cocktails
Since 2001, H2O Seafood & Sushi has showcased seasonal seafood, served with passion, and conceived with creativity. Designed with an upscale New England feel, you’ll feel right at home at H2O in our warm and inviting space. And what’s on our menu is dictated by what’s in the sea, with our culinary team proudly sourcing local fish and supporting local farmers through their creative takes in the kitchen.

Guests are invited to sit at our expansive gray marble bar while feasting on fresh sushi or our modern American seafood classics. Our delicious menu not only features abundant fish, but also satisfies land lovers with celebrated dishes like filet mignon wellington with mushroom duxelles and brie fondue or our roasted half chicken with cornbread stuffing, mushrooms, and chicken jus.

Weekly specials include Happy Hour, as well as our 3-course Wednesday Wine Dinners, which curate pairings of wine with each off-menu course.

Reservations are recommended but walk-ins are always welcome.

Restaurants you may also like

View all

Additional information

  • Dining style
    Casual Dining
  • Price
    $31 to $50
  • Cuisines
    Seafood, Sushi, Contemporary American
  • Hours of operation
    Dinner Fri 4:00 pm–10:00 pm Sat 3:00 pm–10:00 pm Sun 3:00 pm–9:00 pm Dinner/Bar Mon–Thu 4:00 pm–10:00 pm
  • Phone number
  • Payment options
    AMEX, Discover, Mastercard, Visa
  • Dress code
    Smart Casual
  • Catering
    Available. Please contact the restaurant for further details.
  • Private party facilities
    From the very essence of the ocean comes a dramatically different restaurant, inspired by the seafood of the world and infused by a spirit that is fresh, refreshing and totally modern.
  • Delivery & takeout
  • Neighborhood
    Smithtown
  • Cross street
    Edgewood Avenue
  • Parking details
    Private Lot
  • Public transit
    LIRR to Smithtown
  • Entertainment
    Happy Hour Monday through Friday, 4-7PM
  • Additional
    Banquet, Bar/Lounge, Beer, Cocktails, Corkage Fee, Delivery, Full Bar, Happy Hour, Non-Smoking, Outdoor Firepit, Patio/Outdoor Dining, Patio/Outdoor Dining, Takeout, Wheelchair Access, Wine
Gift card

Gift card

Send gift cards instantly by email or print to present in person.

Send a gift card

Experiences

  • $65 Easter Sunday 3-Course Prix Fixe

    Apr 20, 2025 only
    Join us this Easter Sunday for a special $65 3-Course Prix Fixe filled with your favorite H2O sushi, seafood, and more. Visit us online to view this delicious menu! Price is plus tax and tip. Reservations strongly suggested. Please note our full à la carte menu will NOT be available on this day.
    $65 Easter Sunday 3-Course Prix Fixe Photo
  • Long Island Restaurant Week at H2O

    Apr 27, 2025 - May 4, 2025
    Let's welcome the new season together with our $46 3-Course Long Island Restaurant Week menu, available Sunday, April 27th through Sunday, May 4th! Visit our website to check out the full menu now. Reservations strongly suggested. Price is before tax and gratuity. Our full main menu will not be available during this time (sushi offerings will be available).
    Long Island Restaurant Week at H2O Photo

What 4,376 people are saying

Overall ratings and reviews

Reviews can only be made by diners who have eaten at this restaurant

4.8
4.8 based on recent ratings
  • 4.8Food
  • 4.8Service
  • 4.6Ambience
  • 4.5Value

NoiseModerate

Loved For

  • New York State

    Seafood

Review summary

AI-generated from verified diner reviews
H2O: Seafood & Sushi delights with "amazing food," "excellent service," and a vibrant atmosphere. Regulars rave about the sushi and seasonal dishes like "Beef Wellington" and "tuna tacos." Celebrations are made special with personalized touches. Despite occasional noise and parking challenges, guests eagerly return for the consistent culinary excellence and warm hospitality.
4,376 Reviews
  1. Patricia VIP

    New York City19 reviews

    5.0

    Dined 2 days ago

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    Wonderful dinner as always! Great dinner and great service!

    Is this helpful?

  2. Rose

    New York City3 reviews

    5.0

    Dined 3 days ago

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    Food was delicious & Staff very attentive! Great place & looking forward to going again soon.

    Is this helpful?

  3. Ben

    New York City1 review

    5.0

    Dined on March 30, 2025

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 4
    Very nice staff and great food. They took note of our anniversary too.

    Is this helpful?

  4. Laura VIP

    Atlanta47 reviews

    5.0

    Dined on March 30, 2025

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    Visiting from Atlanta. 3rd time we’ve eaten here. Fantastic restaurant! Tuna and flounder entrees were absolutely delicious! The Popovers were to die for! Love this place!

    Is this helpful?

  5. MICHELLE

    New York State2 reviews

    4.0

    Dined on March 30, 2025

    1. Overall 4
    2. Food 4
    3. Service 5
    4. Ambience 4
    Great place for sushi! And I’m sure the raw seafood is good as well, many people around us were enjoying it. Very friendly and accommodating staff! Had a nice night for my son’s birthday dinner. Thank you to all of the staff that made it special for him!

    Is this helpful?

  6. Walter VIP

    New York City25 reviews

    5.0

    Dined on March 29, 2025

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 4
    Great place for sure, the food was cooked perfectly and our server was special

    Is this helpful?

  7. Tena

    New York State6 reviews

    5.0

    Dined on March 29, 2025

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    Excellent. Could order and stay on my diet ❤️great waiters at this place

    Is this helpful?

  8. Pasquale VIP

    New York City3 reviews

    5.0

    Dined on March 29, 2025

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    Blayke was AMAZING! She was very attentive and talkative. Our food was great, as always. Haven't had a bad expirience here yet!

    Is this helpful?

  9. marina VIP

    Atlantic City6 reviews

    3.0

    Dined on March 28, 2025

    1. Overall 3
    2. Food 4
    3. Service 4
    4. Ambience 3
    Food was good enough Limited menus $17 cocktails

    Is this helpful?

  10. Tracey

    New York City1 review

    5.0

    Dined on March 27, 2025

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    Great time, good food the sushi rolls delicious, service was excellent ask for Rob... thank you for a wonderful experience...

    Is this helpful?

FAQs

H2O: Seafood & Sushi offers takeout which you can order by calling the restaurant at (631) 361-6464.

H2O: Seafood & Sushi is rated 4.8 stars by 4376 OpenTable diners.

H2O: Seafood & Sushi does offer gift cards which you can purchase here.

Yes, you can generally book this restaurant by choosing the date, time and party size on OpenTable.

  1. Home
  2. United States
  3. New York State
  4. Suffolk
  5. Smithtown

Make a reservation

2 people
7:00 PM
Booked 8 times today
Experiences are available.
Google Map for H2O: Seafood & Sushi

215 West Main Street, Smithtown, NY 11787

Additional information

  • Cross street
    Edgewood Avenue
  • Neighborhood
    Smithtown
  • Hours of operation
    Dinner Fri 4:00 pm–10:00 pm Sat 3:00 pm–10:00 pm Sun 3:00 pm–9:00 pm Dinner/Bar Mon–Thu 4:00 pm–10:00 pm
  • Price
    $31 to $50
  • Cuisines
    Seafood, Sushi, Contemporary American
  • Dining style
    Casual Dining
  • Dress code
    Smart Casual
  • Parking details
    Private Lot
  • Public transit
    LIRR to Smithtown
  • Payment options
    AMEX, Discover, Mastercard, Visa
  • Entertainment
    Happy Hour Monday through Friday, 4-7PM
  • Additional
    Banquet, Bar/Lounge, Beer, Cocktails, Corkage Fee, Delivery, Full Bar, Happy Hour, Non-Smoking, Outdoor Firepit, Patio/Outdoor Dining, Patio/Outdoor Dining, Takeout, Wheelchair Access, Wine
  • Delivery & takeout
  • Phone number
  • Catering
    Available. Please contact the restaurant for further details.
  • Private party facilities
    From the very essence of the ocean comes a dramatically different restaurant, inspired by the seafood of the world and infused by a spirit that is fresh, refreshing and totally modern.
Gift card

Gift card

Send gift cards instantly by email or print to present in person.

Send a gift card
  • Privacy Policy
  • Terms of Use
  • Cookies and Interest-Based Ads
  • Cookie Preferences
Copyright © 2025 OpenTable, Inc. 1 Montgomery St Ste 500, San Francisco CA 94104 - All rights reserved.
OpenTable is part of Booking Holdings, the world leader in online travel and related services.
Booking Logo
Priceline Logo
KAYAK Logo
Agoda Logo
OpenTable Logo