O Sea

Name: O Sea
Address: 109 S Glassell Street, Orange, CA, 92866, US
Telephone: +1 714-363-3309
Price range: $$
Rating: 5

O Sea is a seafood restaurant located in the historic heart of Orange County. They specialize in responsibly-sourced seafood, complemented by the seasonality and diversity of California cooking. Their menu includes a standout dish, the Pearl Diver Plate, which features a market protein with pearl couscous, labneh, roasted baby carrots, pickled currants, fresh mint and aleppo dressing. In addition to their regular menu items, O Sea also hosts wine dinners with notable winemakers. Come experience their daring take on seafood cuisine at their S Glassell Street location.
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Recent social media posts

04/20/2026

✨ Market Sale & One Final Happy Hour ✨

04/18/2026

One final buyout this evening, y’all! O SEA will serve lunch service today until 3pm.

Looking forward to celebrating you, Pauline & Peter!

04/14/2026

Apologies for the inconvenience, y’all. We are regrouping for tomorrow thru the end of this week.

Looking forward to serving all of you!

04/09/2026

A Note from Mike regarding the future of O SEA…

03/15/2026

We apologize for any inconvenience! See y’all on Tuesday 👋

02/08/2026

Enjoy the game this afternoon, y’all! See you Tuesday! 👋👋

02/07/2026

Sharing special thanks this beautiful February morning to the one and only Allison Schlueter as she departs the restaurant this month!

So many of you will know and love Allison. Along with a few of her peers, Allison has been a part of our service team here at O SEA from opening day in 2021. She has been instrumental not just in serving so many of you over the years, but in establishing our culture of warmth and genuine hospitality here in the restaurant.

Allison - thank you for the five years of incredible commitment and service! It has been the sincerest of pleasures working with you and a joy to watch you develop and grow. You will be missed dearly. From all of us here in Orange, thank you and good luck!

01/27/2026

We look forward to serving y’all for late Happy Hour and Dinner Service this evening!

12/13/2025

Chef new seasonal treats have arrived!

Four new dishes, plus three dishes staying on from our fall menu!

Crudo of Wild Japanese Hamachi
charred jalapeno crema, blood orange, radish, pickled jalapeno, sesame

Grilled Wild Spanish Octopus
walnut pesto, crispy potatoes, goat cheese

Roasted Squash & Apple Greens
romaine & mixed greens, cider dressing, roasted butternut squash, goat cheese, walnuts, pepitas

Rice Pudding with Roasted Honeycrisp Apple
streusel, sea salt

Wild Ross Sea Chilean Seabass
crispy brussels, parsnip puree, chinese sausage, housemade sweet & sour sauce

Burrata Cheese with Apple Chutney
curry oil, garlic chips - grilled rustic bread

Wild Tahitian Albacore Tuna Poke
blood orange aji amarillo dressing, jicama, cucumber - taro chips

12/10/2025

Our fourth annual holiday menu traditions returns - Feast of the Seven Fishes - but with a TWIST!

This year, O SEA is proud to offer this special holiday menu for a more extended season. Can’t join us those last few days before Christmas? No problem. Our Feast of the Seven Fishes menu will be available daily beginning today, Wednesday, December 10th, thru New Year’s Eve, December 31st.

What is Feast of the Seven Fishes, you might ask? It is a timeless Sicilian-American holiday tradition in which generations of family members gather to enjoy a multi-course menu showcasing at least seven different kinds of seafood. 2025 will be our fourth year offering this limited holiday menu - and can we say our best - and we couldn’t be more excited to bring it back for you.

Available at 2pm daily, today thru New Year’s Eve!
4 Courses + Optional Wine Pairings
$78.95/person | $38.95 Optional Wine Pairings

Does my whole party need to order the Feast of the Seven Fishes menu? No! The regular Lunch & Dinner menus will be fully available as well.

Is pre-payment required to book the holiday menu? No! We are happy to accept payment at the conclusion of your visit.

Menu and Reservation link in our BIO above!

Merry Christmas to you and yours! We can’t wait to serve you.

12/01/2025

Our annual holiday gift card promo is live!

Stop by or purchase via the link in bio 🎁

Address

109 S Glassell Street
Orange, CA
92866

To get to S Glassell Street in Orange by public transport, take the local bus or train and get off at Orange Station. From there, walk east on Chapman Avenue for about 10 minutes until you reach S Glassell Street.

If you're driving, take the 22 Freeway and exit at The City Drive. Turn left onto West Chapman Avenue and continue for about 2 miles until you reach S Glassell Street. There is street parking available nearby or a paid parking lot close to the restaurant.

Opening Hours

Tuesday	11:30am - 8:30pm
Wednesday	11:30am - 8:30pm
Thursday	11:30am - 8:30pm
Friday	11:30am - 9pm
Saturday	11:30am - 9pm
Sunday	11:30am - 8:30pm

Telephone

+1 714-363-3309

Website

https://www.eatosea.com/

Alerts

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What people say

O Sea is a seafood restaurant located in the historic heart of Orange County. They offer responsibly-sourced seafood, complemented by the seasonality and diversity of California cooking. What sets O Sea apart from other restaurants is their commitment to using farm-fresh produce from the Orange food community. In fact, they source locally grown Purple Ninja Radishes from a farm just three blocks away and use them in almost every dish they serve.

Recently, O Sea celebrated their second anniversary with a grand wine tasting event where guests had the opportunity to purchase any/all bottles from their wine list for 30% off. The event was a huge success and guests enjoyed heavy hors d'oeuvres while sipping on some really cool bottles of wine.

Overall, O Sea is a great place to enjoy fresh seafood and support local farmers. Their commitment to sustainability and community makes them stand out in Orange County's dining scene.

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