Cryptocurrency

What is OpenSea ($SEA)? All about the largest NFT Marketplace in 2025

Whales Market

• 4 min read
What is OpenSea ($SEA)? All about the largest NFT Marketplace in 2025
What is OpenSea ($SEA)?

The rise of non-fungible token (NFT) marketplaces has ushered in a new era, transforming how we perceive and engage with digital assets. As the first NFT marketplace, OpenSea supports a wide range of NFTs, including digital art, collectibles, virtual goods, domain names, and music.

According to DappRadar, OpenSea is still the world's largest peer-to-peer NFT marketplace, commanding a 71.5% share of Ethereum NFT trading volume in 2025.

Key Takeaways

  • OpenSea ($SEA) is the world’s first and largest multichain NFT marketplace, founded in 2017. At its peak, OpenSea reached over $5B in monthly trading volume and played a crucial role in NFT mass adoption.
  • The upcoming $SEA token is currently in the final pre-TGE stage (as of September 2025), with launch details expected in early October 2025.
  • OpenSea raised $425M+ from top investors including a16z, Paradigm, and Blockchain Capital.

What is OpenSea ($SEA)?

OpenSea is an multichain NFT marketplace that enables users to develop, trade, and exchange NFT directly on the platform. Basically, NFTs can be art, virtual experience, music, or virtual property that are unique things on the blockchain.

As one of the earliest and most recognized platforms, OpenSea reached over $5B in monthly trading volume at its peak. It played a critical role in bringing NFTs to mass adoption within the crypto community.  

OpenSea homepage

Specialities of OpenSea  

  • NFT Trading: Users can buy and sell NFTs on OpenSea. Buyers may purchase instantly at the listed price or place offers, while sellers can set fixed prices or accept alternative offers.
  • Track NFT portfolio: The “Profile” section allows users to monitor their entire NFT portfolio.
  • Mint NFT: Users can mint individual NFTs or create a collection across multiple supported chains such as Ethereum, Polygon, Base,... in the "Create" section.
  • DEX Aggregator:  Through the “Tokens” section, users can swap tokens across 22 different blockchains.

$SEA Token Key Metrics

Here’s the information about $SEA:

  • Name: OpenSea
  • Ticker: $SEA
  • Total supply: TBA
  • Token Standard: TBA
  • Token address: TBA
$SEA teaser. Source: OpenSea

$SEA’s Tokenomics & Fundraising

Tokenomics 

- Total Supply: TBA

- Circulating supply: TBA

- Token Allocation: TBA

Fundraising

OpenSea has successfully raised $425.25M across 6 funding rounds, backed by leading crypto venture capital firms such as a16z (Andreessen Horowitz), Paradigm, and Blockchain Capital. 

OpenSea fundraising

OpenSea ($SEA) Listing Information  

  • Listing Time: TBA
  • Confirmed CEX Listings: TBA

$SEA Utilities

Currently, OpenSea has not announced any official utilities of $SEA. This section will be updated immediately when the official OpenSea announces.

SEA Roadmap & Team

Roadmap 

OpenSea’s roadmap has not always been disclosed in as much detail as DeFi projects. However, based on the latest updates in September 2025, the company is focusing on:

  • Optimizing mobile applications
  • Integrating AI features
  • Preparing for $SEA’s TGE

Some highlights:

  • In September 2025, OpenSea committed over $1M to the “Flagship Collection”, a cultural fund dedicated to acquiring iconic NFTs and celebrating digital art/NFT heritage. The first and second NFTs in this collection are CryptoPunk #5273 and Pudgy Penguin #1647. According to OpenSea, this initiative aims to honor Web3 culture and attract more creators.
  • OpenSea first teased the $SEA token in late 2024. In September 2025, the project is in the final pre-TGE stage. Full details of the TGE are expected to be announced in early October 2025.
OpenSea acquired Crypto Punk #5273

Team 

OpenSea was founded in 2017 by Devin Finzer and Alex Atallah with the goal of creating a secure NFT trading platform for users.

Core team members include: 

Conclusion   

OpenSea remains a powerhouse in the NFT ecosystem, constantly innovating and preparing for its next big leap with the launch of $SEA. While the token’s official use cases are still TBA, OpenSea’s focus on cultural preservation, platform upgrades, and multi-chain support positions it as a key player in shaping the future of Web3.

Disclaimer: This article is for informational purposes only, not investment advice, and Whales Market is not responsible for any of your investment decisions.

FAQs

Q1: When will OpenSea launch the $SEA token?

The exact launch date has not been officially confirmed. More details expected in early October 2025. 

Q2: What chains does OpenSea support?

For NFT trading, OpenSea supports multiple EVM blockchains, including Ethereum, Polygon, Base, Arbitrum,...This multichain approach allows users to mint, trade, and collect NFTs across ecosystems.   

Q3: What is the “Flagship Collection” initiative?

Launched in September 2025, OpenSea’s Flagship Collection is a cultural fund dedicated to acquiring and preserving iconic NFTs such as CryptoPunk #5273 and Pudgy Penguin #1647.

Q4: What is OpenSea Pro?

OpenSea Pro is an NFT marketplace aggregator (formerly Gem V2) that enables professional traders and collectors to trade across multiple marketplaces at once.

Q5: What is the price of OpenSea ($SEA) today?

While OpenSea ($SEA) hasn't been listed yet, users can trade $SEA pre-market on Whales Market at before the TGE. On Whales Market you can trade $SEA before the asset got listed on leading CEXes like Binance, Bybit or OKX.

Q6: What is OpenSea ($SEA) pre-market price?

Currently, $SEA hasn't been listed on Whales Market yet, so users can trade $SEA when it officially lists. Whales Market is the leading pre-market DEX platform to trade pre-TGE tokens and allocations, with over $300 million in volume, no middlemen, trustless and on-chain.