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

O SEA | seafood for thought

4.9
4.9
839 Reviews
$30 and under
Seafood

Make a reservation

2 people
7:00 PM
Booked 9 times today
Experiences are available.
  • Neighborhood gem
  • Great for fine wines
  • Healthy
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
  • 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

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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

What 839 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 delights with "outstanding service and food." Its innovative seafood dishes, like "green curry mussels" and "chile verde halibut," are a highlight. The ambience is cozy and inviting, whether enjoying the seasonal menu or the "incredible wine list." A must-visit for seafood lovers.

839 Reviews
  1. Baksdad

    Orange County25 reviews

    5.0

    Dined 2 days ago

    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.

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  2. LeslieB

    Orange County14 reviews

    5.0

    Dined 2 days ago

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    Everyone at O’Sea is so welcoming and friendly. The food is amazing. One of our favorite places. Mike, Sarah and Elise were wonderful!

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  3. Amy VIP

    San Francisco3 reviews

    3.0

    Dined 3 days ago

    1. Overall 3
    2. Food 3
    3. Service 2
    4. Ambience 3
    I have been to Osea many times but today was the worst ever. The serving was so slow and my server was not around when we needed her. The food was not good at all especially cioppino was very dissapointing. Overall, everything was not so good when we chose Osea to celebrate my son’s birthday.

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  4. Janine

    Los Angeles2 reviews

    5.0

    Dined 3 days ago

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    First time and it won't be the last. Loved the vibe, nicely decorated, light and comfy. The entire staff was on it and friendly too. Great wine list, loved the music. Finally, the food was very good. They did everything right. Returning soon!

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  5. Jocelyn VIP

    Pittsburgh9 reviews

    5.0

    Dined 4 days ago

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    This was my second dinner here. I really appreciate a restaurant that takes excellent care of solo diners (such as myself). They remembered me and welcomed me warmly. I also appreciate a restaurant menu that's well suited to all levels of appetite. Feeling less hungry this time, I opted for a cup of chowder (lovely) and a green goddess side salad. Happy surprise: you can order any of their salads as a side salad. Equally appreciated: interesting and reasonably priced wine by the glass. The service is friendly, thoughtful and adept. I wish I lived closer!

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  6. Jocelyn

    Pittsburgh25 reviews

    5.0

    Dined 5 days ago

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    I chose the O Sea Burrito with sea bass and paired it with a glass of orange wine. Both were delicious. The service was excellent.

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  7. KatherineS

    Nashville7 reviews

    5.0

    Dined 5 days ago

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    We brought customers to the restaurant and everything was AMAZING - the food and service were everything we expected and more!

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  8. OpenTable Diner

    Orange County2 reviews

    5.0

    Dined 6 days ago

    1. Overall 5
    2. Food 5
    3. Service 4
    4. Ambience 5
    O Sea participated in OC restaurant week and I needed to try it! Located in the Orange circle, gets a little busy in that area- but the food was very high end with many delicious options. Loved the lobster roll!! Very modern dining

    Is this helpful?

  9. irene

    Orange County2 reviews

    5.0

    Dined 6 days ago

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    Wayland was incredible very attentive and helpful!

    Is this helpful?

  10. Vidhi VIP

    Orange County3 reviews

    5.0

    Dined 7 days ago

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    Our server was really good. Food was amazing I can’t wait to go 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 839 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 9 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
  • 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
Gift card

Gift card

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