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H2O: Seafood & Sushi, Smithtown, NY

H2O: Seafood & Sushi

4.7 (4407)
$31 to $50
Seafood
215 West Main Street, Smithtown, NY 11787

Make a reservation

2 people
7:00 PM
Booked 53 times today
Experiences are available.

About this restaurant

  • Good for special occasions
  • Neighborhood gem
  • Great for outdoor dining
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.

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

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Experiences

  • Father's Day at H2O

    Jun 15, 2025 only
    This Father's Day, show dad just how much you care with our delicious three-course prix fixe feast featuring your favorite H2O seafood, sushi, and steaks. 🥩 3-Course Dinner Prix Fixe: $75++ Adults | $35++ Child 2-11* | Under 2 Dine Free Visit us online for menu, including children's menu, and reservations. Please note that our regular menu will be unavailable on Father's Day. All pricing is plus tax and gratuity. We require a credit card to hold your reservation. There will be a $50/pp penalty charge for cancellations less than 48 hours in advance and no-shows.
    Father's Day at H2O Photo

What 4,407 people are saying

H2O: Seafood & Sushi reviews from people who’ve dined at this restaurant. Based on recent rating.

Overall ratings and reviews

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

4.7
4.7 based on recent ratings
  • 4.7Food
  • 4.8Service
  • 4.6Ambience
  • 4.4Value

NoiseModerate

Loved For

  • New York State

    Seafood

  • Suffolk

    Seafood

Review summary

AI-generated from verified diner reviews
H2O: Seafood & Sushi offers "excellent food and service" with a beautifully decorated ambiance. The sushi and seafood dishes are "phenomenal," especially during special events like wine dinners. The attentive staff, including standout servers like Stephen and Rob, enhance the dining experience. Despite occasional long waits, it's a "delightful experience" worth revisiting.
4,407 Reviews
  1. David VIP

    New York City282 reviews

    5.0

    Dined 3 days ago

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    Great steak and drinks. Love Brittany and Jeremy. Outstanding service and great selection. The sushi was excellent, loved the H2o roll and the Japanese Cowboy

    Is this helpful?

  2. Andrea

    Unspecified1 review

    5.0

    Dined 4 days ago

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 4
    Excellent choice for entertaining our clients visiting from California!

    Is this helpful?

  3. erin

    New York City2 reviews

    5.0

    Dined 4 days ago

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    Our food was phenomenal and our waiter Michael was fantastic!!!! We dine here often and are always happy.

    Is this helpful?

  4. Hyman

    New York City17 reviews

    5.0

    Dined 7 days ago

    1. Overall 5
    2. Food 4
    3. Service 5
    4. Ambience 5
    As always both the food and service was outstanding. We shared the mussel appetizer to start and could not stop sipping the broth. The Tuna and Swordfish were both excellent.

    Is this helpful?

  5. Mike VIP

    New York City34 reviews

    5.0

    Dined 7 days ago

    1. Overall 5
    2. Food 5
    3. Service 4
    4. Ambience 5
    Always a winner. Strawberry shortcake dessert is back on the menu and OUTSTANDING.

    Is this helpful?

  6. Sabrina

    Jacksonville / Northeast Florida22 reviews

    2.0

    Dined on June 6, 2025

    1. Overall 2
    2. Food 2
    3. Service 4
    4. Ambience 4
    Ambience of the place is great. You have choice of bar seating, indoor and outdoor seating. We chose to sit inside.  our Server was wonderful. She was attentive and informative. We ordered the tuna nachos as a starter. We were greatly disappointed with it due to the fact that there was hardly any avocado or tuna on top of these fried nachos. I would say a half an avocado at most and four pieces of cubed. Tuna, each for the two of us definitely not worth ordering. In the past, the sushi has been delicious and fresh. This was not the case last night. I ordered the Spivey tuna roll and my fiancé ordered the H2O roll. Not only have they shrunk in size from the past. It just didn’t taste fresh. I had two drinks which were delicious and he had two drinks. The bill was $178! So for four drinks, one appetizer and two small rolls it was definitely not worth the money. They really have gone down in quality it was very disappointing. We will not be back

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  7. Paul VIP

    New York City117 reviews

    5.0

    Dined on June 6, 2025

    1. Overall 5
    2. Food 4
    3. Service 5
    4. Ambience 5
    Another great meal here. Service was fantastic. Only thing that wasn’t good was the Cod milenanse. It was super dry and breading tasted burnt. Strange that this is on the seasonal specialties menu. Mussels appetizer was fantastic and so was everything else. Banana split a must for dessert

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  8. Mary Ann

    Alabama3 reviews

    5.0

    Dined on June 6, 2025

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    Fabulous! Serviced was impeccable. Thanks, Rob. Our dinner was delicious.

    Is this helpful?

  9. David VIP

    New York City282 reviews

    5.0

    Dined on June 4, 2025

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    Great food and service. Loved the watermelon salad and the California roll! Stephen was a great waiter!

    Is this helpful?

  10. Tom VIP

    New York City7 reviews

    5.0

    Dined on June 4, 2025

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    The food was excellent. My wife and I enjoyed the puff pastry (bread). It was a nice treat versus standard fare bread baskets  The appetizer and entree portions were a good size and well presented.  Overall, we enjoyed our 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 4.7 stars by 4407 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 53 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
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