Big Sea

Big Sea is a marketing agency at 136 4th St N Ste 238 in St. Petersburg (33701). It was founded in 2005, which makes it older than 83% of the SEO companies we track in the city. The team is listed at 11-50 people. Its profile covers Web design, Advertising, Marketing strategy, SEO.

Clients rate it 4.6 out of 5 across 22 Google reviews, more than the city median of 17.5; 86% of those reviews are five-star, against 98% across St. Petersburg. When we searched “seo agency near me” from St. Petersburg on 2 October 2026, it appeared at #18; that search was led by Digital Marketing SEO agency - Mack Media Group with 18 reviews.

Where the score comes from

Those three parts give an Explorer Score of 77/100, which places Big Sea 15th of 44 SEO companies in St. Petersburg. How the score works.

Reviews in detail

86% five-star and 9% one- or two-star, against 98% and 1% across St. Petersburg. 22 reviews is more than 64% of local SEO companies have, and among the 34 with ten or more, its review-weighted rating beats 0%.

Google Maps check

We searched “seo agency near me” from St. Petersburg on 2 October 2026. Big Sea came in at #18, ahead of 56% of the 41 SEO companies checked. The top spot went to Digital Marketing SEO agency - Mack Media Group, which has 18 reviews. An SEO company that cannot rank itself for its own service in its own city has not shown it can rank you.

What the data says

Strengths:

• 21 years in business, against a city median of 15.
• An owner-managed Google Business Profile.
• Open seven days a week.

Check before you sign:

• Only #18 on Google Maps for “seo agency near me”.
• No contact page on its website.

Best for: SEO plus a new website.

Services, website and presence

Services listed

Marketing agency, Advertising agency, Marketing consultant, Website designer (4; local median 3)

Website

bigsea.co — “Big Sea | Nonprofit & Healthcare Marketing & Web Design Agency”

Built on

Wordpress, about 1 pages, HTTPS

Contact page / booking

No / No

Social profiles

Facebook, Linkedin, Instagram

Google Ads

Not seen

Google profile

Owner-managed, 29 photos, open 7 days a week

Contact email

Not confirmed

Questions to ask Big Sea

1. You do not appear on the first page of Google Maps for “seo agency near me”. How do you win clients, and what results can you show for them?
2. Where does your own business rank on Google Maps for "seo agency near me" in this city, and why?
3. Which three clients can I look up on Google right now to see the rankings you built?
4. What do you do in month one, and what will I see in my reports by month three?
5. Do you build links, and where from?
6. Who owns the content and the tracking accounts if we part ways?

Quick answers

Is Big Sea a good SEO company?

Big Sea is a solid option in St. Petersburg. Its strongest signal is 21 years in business, against a city median of 15. Before signing, note only #18 on Google Maps for “seo agency near me”.

How many reviews does Big Sea have?

22 Google reviews at an average of 4.6. That is more than 64% of SEO companies in St. Petersburg; the median has 17.5.

Where is Big Sea located?

136 4th St N Ste 238, St. Petersburg, FL 33701. 5 other SEO companies we list share the same ZIP code.

What does Big Sea do?

Its Google profile lists Marketing agency, Advertising agency, Marketing consultant, Website designer. We tag that as Web design, Advertising, Marketing strategy, SEO.

Sources: Google Business Profile, the business's website and our Maps check. Figures as of 17 October 2026. ← All 44 St. Petersburg SEO companies, ranked