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O Sea Interior - O SEA | seafood for thought, Orange, CA

O SEA | seafood for thought

4.9
4.9
848 Reviews
$30 and under
Seafood

Make a reservation

2 people
7:00 PM
Booked 13 times today
Experiences are available.
  • Neighborhood gem
  • Great for fine wines
  • Good for special occasions
O SEA — a seafood restaurant of time and place in the historic Plaza district of Old Towne Orange, recently recognized by the Los Angeles Times as the Best Seafood Restaurant in Orange County and by Wine Spectator Magazine with an Award of Excellence. Something fun, something different, something fresh — O SEA is where seafood is headed. Think salmon ceviche in coconut leche de tigre, tuna poke in gochujang dressing, crispy oaxacan hot shrimp, west coast oysters on the half with thai red curry and tajin’d lime.

Responsibly-procured, best-in-class products, served consistently and at a value, with deeply craveable and seasonal flavors — welcome to O SEA.

We can’t wait to serve you.

Additional information

  • Dining style
    Casual Elegant
  • Price
    $30 and under
  • Cuisines
    Seafood, Wine Bar, Breakfast
  • Hours of operation
    Lunch Tue–Fri 11:30 am–4:00 pm Sat, Sun 10:00 am–3:00 pm Brunch Sat, Sun 10:00 am–3:00 pm Happy Hour Tue–Fri 2:00 pm–5:00 pm Dinner Tue–Thu 4:00 pm–8:30 pm Fri 4:00 pm–9:00 pm Sat 3:00 pm–9:00 pm Sun 3:00 pm–8:30 pm
  • Phone number
  • Payment options
    AMEX, Discover, Mastercard, Visa
  • Dress code
    Casual Dress
  • Executive chef
    German Mejia
  • Delivery & takeout
  • Neighborhood
    Orange
  • Cross street
    Chapman Ave and S Glassell Street
  • Parking details
    Public Lot
  • Additional
    Beer, BYO Wine, Gender Neutral Restroom, Gluten-free Options, Happy Hour, Non-Smoking, Patio/Outdoor Dining, Takeout, Vegan, Wheelchair Access, Wine
Gift card

Gift card

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

Send a gift card

Experiences

  • Happy Hour at O SEA - Weekdays from 2-5pm

    Multiple dates available
    Orange's best Happy Hour is back at O SEA - join us every weekday afternoon (Tuesday-Friday) from 2-5pm for 50% off our entire bottled wine list, $1.45 oysters, and a selection of menu favorites - spicy tuna on crispy rice, salmon ceviche, and a lil cheeseburger - just to name a few. We look forward to serving you!
    Happy Hour at O SEA - Weekdays from 2-5pm Photo
  • Weekend Brunch at O SEA!

    Multiple dates available
    You asked...we listened! BRUNCH has arrived at O SEA! Join us every Saturday and Sunday from 11am-3pm for a collection of Orange's favorite breakfast snackies. Think Brioche French Toast 'Tres Leches', Sweet & Smoky Chilaquiles with Salsa Macha, Breakfast BLT Greens, and Cinnamon Buns with Pistachio, Blood Orange, and Green Cardamom. Bevies? The best Mimosa in Old Towne Orange, maybe a Mango Michelada, maybe an Iced Lavender Latte. Whatever floats your boat. Brunch not quite your thing? We serve our regular Lunch menu from 11am-3pm as well. We look forward to serving you!
    Weekend Brunch at O SEA! Photo
  • Rhys & Centennial Mountain Vineyards - Wine Dinner

    $195.00 per person

    Prepaid

    Apr 3, 2025 only
    6:00 PM
    Our first winemaker dinner of 2025 has arrived! This Thursday, April 3rd, please join us in welcoming Director of Winemaking Jeff Brinkman of Rhys & Centennial Mountain Vineyards as we showcase 7 distinct wines and 7 distinct terroirs in California's Santa Cruz Mountains, Sonoma County, and Mendocino County. For over twenty years, Rhys Vineyards has rightfully carved out its place among California's blue chip wineries, producing single-vineyard Pinot Noirs & Chardonnays of place and finesse. Their sister winery - Centennial Mountain Vineyards - is the state's first winery to produce the signature varietals of Sicily, like Carricante and Nerello Mascalese. Chef German is thrilled to serve five distinct Cal-Sicilian courses to pair with these spectacular wines, paying respect to the wineries' connections to Sicily and Mediterranean cuisine.

What 848 people are saying

Overall ratings and reviews

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

4.9
4.9 based on recent ratings
  • 4.9Food
  • 4.9Service
  • 4.8Ambience
  • 4.7Value

NoiseModerate

Loved For

  • Orange County

    Best Overall

  • Orange County

    Best Service

  • Orange County

    Seafood

  • North Orange County

    Best Overall

  • North Orange County

    Best Food

  • North Orange County

    Best Service

  • North Orange County

    Best Ambiance

  • North Orange County

    Great for fine wines

  • North Orange County

    Seafood

Review summary

AI-generated from verified diner reviews
O SEA | seafood for thought offers a delightful dining experience with "amazing food" and "outstanding service." The modern ambiance complements the "fresh and artistically presented" dishes, including standout seafood like mussels and fish tacos. The extensive wine list is a highlight. Visit for a memorable meal in Orange Circle.

848 Reviews
  1. Kriss

    Los Angeles1 review

    5.0

    Dined 3 days ago

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    Food is amazing! Best restaurant in orange! Service is amazing

    Is this helpful?

  2. Kelly

    Los Angeles6 reviews

    5.0

    Dined 4 days ago

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    The food is always amazing and the service is outstanding! Great wine list and corkage policy.

    Is this helpful?

  3. Piroja

    Orange County2 reviews

    4.0

    Dined 4 days ago

    1. Overall 4
    2. Food 4
    3. Service 5
    4. Ambience 5
    This is a very modernly classy kind of place, where you feel like you’re getting great service and everything feels very new and fresh- the food, the decor, the overall flavor of the place. If you’re looking for a hearty amount of food, maybe not so much, but if you’re looking for quality- you found it!

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  4. Peter VIP

    Central Coast55 reviews

    4.0

    Dined 4 days ago

    1. Overall 4
    2. Food 5
    3. Service 5
    4. Ambience 4
    Definitely lively and active atmosphere. Food was very good , served quickly but very fresh and artistically presented. Staff was friendly, patient and pleasant.

    Is this helpful?

  5. Joe

    New York City1 review

    5.0

    Dined 6 days ago

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    If you are reading this, make a reservation ASAP. Incredible food and service.

    Is this helpful?

  6. LeslieB

    Orange County15 reviews

    5.0

    Dined 7 days ago

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    O’Sea has the freshest seafood. I love Princess Edward Island mussels and their sauce is amazing. Thai curry sauce is so good that I took my leftover sauce home! The fish tacos were incredible. And their dessert were wonderful.

    Is this helpful?

  7. Pam VIP

    Los Angeles13 reviews

    5.0

    Dined on March 17, 2025

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    Great and friendly service. There was a question with a wine selection and the server checked it out with someone more acquainted with that particular wine. Good choice.We’ve been here quite a few times and I’m impressed with the choices and different preparations of the protein. Can’t beat the mussels or crab cake. Also a very interesting wine list. A must go restaurant!!!

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  8. OpenTable Diner VIP

    Orange County4 reviews

    5.0

    Dined on March 16, 2025

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    Best seafood restaurant in O.C. And the very best wine selection in O.C. - especially if you like natural wines.

    Is this helpful?

  9. OpenTable Diner

    Orange County1 review

    5.0

    Dined on March 14, 2025

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    We had a great experience and we truly appreciate their staff going the extra mile for our birthday celebration.

    Is this helpful?

  10. Baksdad

    Orange County25 reviews

    5.0

    Dined on March 9, 2025

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    We enjoyed ourselves immensely. This was our friends' first time and the food, atmosphere and service were everything we told them about. I'm sure they, as well as us, will be back.

    Is this helpful?

FAQs

O SEA | seafood for thought offers delivery in partnership with Postmates and Uber Eats. O SEA | seafood for thought also offers takeout which you can order by calling the restaurant at (714) 363-3309.

O SEA | seafood for thought is rated 4.9 stars by 848 OpenTable diners.

O SEA | seafood for thought 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.

Make a reservation

2 people
7:00 PM
Booked 13 times today
Experiences are available.
Google Map for O SEA | seafood for thought

109 S Glassell St, Orange, CA 92866-1421

Additional information

  • Cross street
    Chapman Ave and S Glassell Street
  • Neighborhood
    Orange
  • Hours of operation
    Lunch Tue–Fri 11:30 am–4:00 pm Sat, Sun 10:00 am–3:00 pm Brunch Sat, Sun 10:00 am–3:00 pm Happy Hour Tue–Fri 2:00 pm–5:00 pm Dinner Tue–Thu 4:00 pm–8:30 pm Fri 4:00 pm–9:00 pm Sat 3:00 pm–9:00 pm Sun 3:00 pm–8:30 pm
  • Price
    $30 and under
  • Cuisines
    Seafood, Wine Bar, Breakfast
  • Dining style
    Casual Elegant
  • Dress code
    Casual Dress
  • Parking details
    Public Lot
  • Payment options
    AMEX, Discover, Mastercard, Visa
  • Executive chef
    German Mejia
  • Additional
    Beer, BYO Wine, Gender Neutral Restroom, Gluten-free Options, Happy Hour, Non-Smoking, Patio/Outdoor Dining, Takeout, Vegan, Wheelchair Access, Wine
  • Delivery & takeout
Gift card

Gift card

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

Send a gift card
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