O SEA | seafood for thought

Name: O SEA | seafood for thought
Address: 109 S Glassell St, Orange, CA, United States, 92866-1421
Telephone: (714) 363-3309
Price range: $30 and under
Rating: 4.8

4.8 (893)

$30 and under

Seafood

109 S Glassell St, Orange, CA 92866-1421

Make a reservation

2 people

Jul 9, 2025

7:00 PM

Booked 18 times today

Experiences are available.

About this restaurant

Neighborhood gem
Good for special occasions
Great for fine wines

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
(714) 363-3309
Website
https://eatosea.com/
Payment options
AMEX, Discover, Mastercard, Visa
Dress code
Casual Dress
Executive chef
German Mejia

Location
109 S Glassell St, Orange, CA 92866-1421
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

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

Send a gift card

Experiences

Date Night at O SEA
Multiple dates available
The deal of the season has arrived! Your Choice of Four Courses to Share + Your Choice of A Bottle of Wine Available every Tuesday, Wednesday, Thursday evening $99.95 For Two Guests Check the menu below in 'Menus'
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!
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!

Ask Concierge
AI Beta

Our AI assistant, Concierge, is here to answer your questions about this restaurant.

Popular dishes

What 893 people are saying

O SEA | seafood for thought 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

4.8

4.8 based on recent ratings

4.8Food
4.9Service
4.8Ambience
4.6Value

Noise • Moderate

Loved For

Orange County
Seafood
North Orange County
Best Ambiance
North Orange County
Neighborhood gem
North Orange County
Seafood

Review summary

AI-generated from verified diner reviews

O SEA | Seafood for Thought is a standout dining destination in Orange Circle, celebrated for its "excellent food, ambience, and service." Guests rave about its "unique and interesting menu" and "outstanding wine list." The restaurant offers a "consistently high quality dining experience," featuring fresh seafood and attentive service, making it a favorite among locals and visitors alike.

893 Reviews

J
John VIP
Orange County52 reviews
5.0
Dined 3 days ago
1. Overall 5
2. Food 5
3. Service 5
4. Ambience 5
Great place. Fresh, delicious and healthy fish selections. Excellent choice of good wines.
Is this helpful?
C
Carolyn
Phoenix / Arizona6 reviews
5.0
Dined 4 days ago
1. Overall 5
2. Food 5
3. Service 5
4. Ambience 5
Highly Recommend! My childhood friends and I had a wonderful meal during our visit. The atmosphere was delightful and the staff attentive. I will most definitely come back when I am back in Orange County.
Is this helpful?
G
Gregory
Orange County3 reviews
2.0
Dined on June 29, 2025
1. Overall 2
2. Food 2
3. Service 3
4. Ambience 3
Its a well intentioned restaurant with nice people but the food is not consistent with the high price and the meals are not exciting to the palette they become monotonous after a few bites and don't leave the diner with a memorable culinary experience.
1 person found this helpful
A
Alex VIP
Orange County4 reviews
5.0
Dined on June 28, 2025
1. Overall 5
2. Food 5
3. Service 5
4. Ambience 5
Always amazing! Wines, food, ambiance - SoCals best seafood hands down.
Is this helpful?
R
Robin
Orange County1 review
5.0
Dined on June 27, 2025
1. Overall 5
2. Food 5
3. Service 5
4. Ambience 5
Excellent food, ambience, and service. We will be back
Is this helpful?
J
Janel
Orange County29 reviews
5.0
Dined on June 25, 2025
1. Overall 5
2. Food 5
3. Service 5
4. Ambience 4
Excellent poke bowl - the perfect lunch for a warm day. My lunch companion enjoyed her spicy mussels too. Good but unobtrusive service and a very clean environment.
Is this helpful?
M
Michelle VIP
Orange County11 reviews
5.0
Dined on June 24, 2025
1. Overall 5
2. Food 5
3. Service 5
4. Ambience 5
Great food and great service. And the menu is unique and interesting.
Is this helpful?
C
Cynthia
Orange County11 reviews
5.0
Dined on June 21, 2025
1. Overall 5
2. Food 5
3. Service 5
4. Ambience 5
Truly The Best Dining Experience In Years. Rarely do I have a memorable dining experience at an Orange County restaurant. O Sea is the exception and was great in all respects - from the friendly, accommodating hostess, to the wonderful menu choices, to the great service. I went to O Sea with an out of town guest who wanted to share several small plates and one main dish. She asked the waitress not to bring everything together, but to space out each dish. The waitress timed everything perfectly - the service was attentive without being intrusive. Each dish was perfectly prepared. I would highly recommend the halibut - and I am not usually a big halibut fan! In short - I cannot wait to go back and am so excited to finally have a favorite OC restaurant that I can brag about to my L. A. friends!
Is this helpful?
D
Dr Mark
Denver / Colorado12 reviews
5.0
Dined on June 16, 2025
1. Overall 5
2. Food 5
3. Service 5
4. Ambience 4
Best seafood experience I have had in a while. Excellent menu and wine list. Will return every time I am in So. California.
Is this helpful?
P
Peter VIP
California Central Coast59 reviews
5.0
Dined on June 15, 2025
1. Overall 5
2. Food 5
3. Service 5
4. Ambience 4
The Food and Service were both well noting. The food was fresh and well prepared. The service was attentive and accommodating, especially due to my wife’s dietary restrictions.
Is this helpful?

FAQs

O SEA | seafood for thought does offer delivery in partnership with 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 4.8 stars by 893 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

Jul 9, 2025

7:00 PM

Booked 18 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

Website
https://eatosea.com/
Phone number
(714) 363-3309

Gift card

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

Send a gift card

O SEA | seafood for thought

Make a reservation

About this restaurant

Additional information

Gift card

Experiences

Date Night at O SEA

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

Weekend Brunch at O SEA!

Ask Concierge
AI Beta

Popular dishes

lil burrito

Lil Burrito

DAILY CIOPPINO

Menu

DAILY OYSTERS

KUMAMOTO

NAUTILUS

MAINS

WILD COLUMBIA RIVER KING SALMON with SUMMER CORN VELOUTE$52.95

WILD BRITISH COLUMBIAN HALIBUT$49.95

What 893 people are saying

Overall ratings and reviews

Loved For

Review summary

FAQs

Does O SEA | seafood for thought offer delivery through OpenTable or takeout?

How is O SEA | seafood for thought restaurant rated?

Does O SEA | seafood for thought offer gift cards?

Is O SEA | seafood for thought currently accepting reservations?

Make a reservation

Additional information

Gift card