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

O SEA | seafood for thought

4.9
4.9
819 Reviews
$30 and under
Seafood

Make a reservation

2 people
7:00 p.m.
Booked 32 times today
Experiences are available.
  • Neighbourhood 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.

Order delivery or takeout

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
    (714) 363-3309
  • Payment Options
    AMEX, Discover, Mastercard, Visa
  • Dress code
    Casual Dress
  • Executive Chef
    German Mejia
  • Neighbourhood
    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

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Experiences

  • 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
  • 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

What 819 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
  • 4.7Ambience
  • 4.6Value

NoiseModerate

Loved For

  • Orange County

    Best Overall

  • Orange County

    Seafood

  • North Orange County

    Best Overall

  • North Orange County

    Best Food

  • North Orange County

    Best Service

  • 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 "wonderful food and service" with standout dishes like clam chowder and fish tacos. Located in the Orange Circle, it boasts "great ambiance and service" and a "stellar wine list." Diners rave about the "fresh seafood" and "unique menu," making it a "must-go" spot in Southern California.

819 Reviews
  1. Richard

    VIP

    Orange County

    20 reviews

    5.0

    20 reviews

    Dined 2 days ago

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    Another great meal at the O’Sea. Perfect albacore tuna.

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  2. Stanford

    VIP

    Los Angeles

    43 reviews

    5.0

    43 reviews

    Dined 7 days ago

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    The food is consistently tasty. I enjoyed the kale Caesar salad, the Tuscan fish preparation and the spicy chocolate bread pudding. Each dish was carefully prepared, ample sized and delicious

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  3. Jeannette

    VIP

    Houston

    18 reviews

    5.0

    18 reviews

    Dined on February 7, 2025

    1. Overall 5
    2. Food 5
    3. Service 4
    4. Ambience 5
    Wonderfully tasting food, great service and clean location! Go, you won’t be disappointed! We had the crab cake, burrito and lean and mean— everything was superb!

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  4. Ken

    VIP

    London

    1 review

    5.0

    1 review

    Dined on February 6, 2025

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    Great restaurant with incredible service. Props to our waiter Filly for his great recommendations and service. Nice wine list, great happy hour and food made with love. We'll be back soon!!! 5 out of 5.

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  5. Derrick

    Orange County

    1 review

    5.0

    1 review

    Dined on February 5, 2025

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    Amazing food and amazing service! Thank you for giving us a good birthday dinner for our mom <3

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  6. Anna

    Orange County

    5 reviews

    5.0

    5 reviews

    Dined on February 5, 2025

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    O Sea is always a high quality dining experience with warm and attentive service. Love the atmosphere that is a little nicer, but also comfortable and sophisticated. Great wines too!

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  7. helen

    VIP

    Orange County

    32 reviews

    5.0

    32 reviews

    Dined on February 4, 2025

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 4
    Overall great experience…food and service were eccellent

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  8. Robert

    VIP

    Orange County

    90 reviews

    5.0

    90 reviews

    Dined on January 30, 2025

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    Wonderful food and service. I look for value these days and then outstanding food when dining out. Cup of clam chowder was exquisite and beautifully plated. No gelatinous broth, instead a well seasoned light one with perfect seasoning balance. Fish tacos were fresh and well garnished. Decaf pressed coffee was the best I have ever had… full bodied coffee flavor and no hint it was decaf! I must say the tiled floor I walked over in front of the kitchen to the restroom was the cleanest, shiniest floor I have ever seen in a restaurant kitchen area! Start to finish my experience was beyond expectation. Well done O’Sea!!!

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  9. karen

    VIP

    Orange County

    33 reviews

    5.0

    33 reviews

    Dined on January 29, 2025

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    The food is delicious and the dishes are so unique. Everyone is happy at OSea and I highly recommend coming here for lunch or dinner as it is a wonderful experience all around!

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  10. John

    New York City

    3 reviews

    5.0

    3 reviews

    Dined on January 26, 2025

    1. Overall 5
    2. Food 4
    3. Service 5
    4. Ambience 5
    Beautiful space in the Orange Circle with great service. The quality of the seafood was outstanding and the extensive wine list was impressive. We enjoyed a nice evening with them we’ll definitely return!

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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 819 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 p.m.
Booked 32 times today
Experiences are available.

Order delivery or takeout

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
  • Neighbourhood
    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
Gift card

Gift card

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

Send a gift card
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