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

O SEA | seafood for thought

4.9
4.9
835 Reviews
$30 and under
Seafood

Make a booking

2 people
19:00
Booked 40 times today
Experiences are available.
  • Neighbourhood 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.

Additional information

  • Phone number
  • 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
  • Dress code
    Casual Dress
  • Parking details
    Public Lot
  • Payment Options
    AMEX, Discover, Mastercard, Visa
  • Executive Chef
    German Mejia
  • Delivery & takeout
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 835 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
  • 4.6Value

NoiseModerate

Diners' Choice Awards

  • 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 Ambience

  • North Orange County

    Great for fine wines

  • North Orange County

    Seafood

Review summary

AI-generated from verified diner reviews
O SEA offers a delightful seafood dining experience in Orange Circle, praised for its "outstanding food," "exceptional wines," and "great service." Guests appreciate the "fresh and delicious" seafood and "knowledgeable staff." The warm, stylish atmosphere and "extensive wine list" make it a top choice for seafood lovers.

835 Reviews
  1. Amy

    VIP

    San Francisco

    3 reviews

    3.0

    3 reviews

    Dined today

    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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  2. Jocelyn

    VIP

    Pittsburgh

    9 reviews

    5.0

    9 reviews

    Dined 1 day 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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  3. Jocelyn

    VIP

    Pittsburgh

    25 reviews

    5.0

    25 reviews

    Dined 2 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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  4. KatherineS

    Nashville

    7 reviews

    5.0

    7 reviews

    Dined 2 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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  5. irene

    Orange County

    2 reviews

    5.0

    2 reviews

    Dined 3 days ago

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

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  6. Vidhi

    VIP

    Orange County

    3 reviews

    5.0

    3 reviews

    Dined 4 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

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  7. Daniel

    VIP

    Los Angeles

    12 reviews

    4.0

    12 reviews

    Dined 5 days ago

    1. Overall 4
    2. Food 5
    3. Service 5
    4. Ambience 4
    Found O SEA and tried it as a business lunch place. Food was very good. Service was excellent, the waitress was patient, allowing us to conduct business first resulting in delayed order. Once order was in, food delivery was rapid and nicely laid out in table. A very agreeable lunch in a nice setting. Music could be a bit turned down so that business can be easier conducted. Will be coming back, as this time I ate the OC Restaurant lunch.

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  8. Duane

    VIP

    Orange County

    24 reviews

    5.0

    24 reviews

    Dined 6 days ago

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    Resrvations at 5:00pm, no problem. Service is friendly and prompt. Always a good sining experience.

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  9. TustinDiner

    VIP

    Los Angeles

    14 reviews

    5.0

    14 reviews

    Dined 7 days ago

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    Delicious food and fantastic atmosphere! Highly recommend!

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  10. David

    Orange County

    6 reviews

    5.0

    6 reviews

    Dined on 28 February 2025

    1. Overall 5
    2. Food 5
    3. Service 5
    4. Ambience 5
    Great vibe, great service and great food. Thank you Mike and team.

    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 takeaway which you can order by calling the restaurant at (714) 363-3309.

O SEA | seafood for thought is rated 4.9 stars by 835 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 booking

2 people
19:00
Booked 40 times today
Experiences are available.
Google Map for O SEA | seafood for thought

109 S Glassell St, Orange, CA 92866-1421

Additional information

  • Phone number
  • 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
  • Dress code
    Casual Dress
  • Parking details
    Public Lot
  • Payment Options
    AMEX, Discover, Mastercard, Visa
  • Executive Chef
    German Mejia
  • 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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