🎉 15TH BIRTHDAY! 🎉

Celebrate with us all year! 7 months of investment in a platform with massive value - both free and pay what you like

🐙 Master All 309 Octopus Species

The only learning platform with spaced repetition for marine biology

✓ No credit card required ✓ NGSS aligned ✓ For students & teachers
🌊 Browse Free
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🌊 Explore Octopus Worlds — Browse Forever Free

Dive into the ocean's hidden world with 309 species, interactive maps, and research links — all available without login.

  • Explore
  • • 309 species with detailed info, images, and research links
  • • Interactive world map with diving spots
  • • Shipwrecks, overfishing zones, and ocean heroes
  • • WoRMS taxonomic references
  • • Scientific databases and research links
  • ➡️ Browse all species profiles — no login required!
🐙 Browse All 309 Species 🗺️ Interactive World Map
🎁 30-Day Free Trial
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🎮 Start Your Free 30-Day Trial

Unlock all learning games, spaced repetition, and progress tracking. No credit card required.

  • Unlock Everything
  • • All learning games unlocked
  • • Spaced repetition system active
  • • Personal progress dashboard
  • • Adaptive difficulty (3 levels)
  • • Progress tracking & analytics
  • After Trial
  • • Continue for $12/year
  • • Your progress is preserved
  • • Pay what you want: $12-50/year
  • ➡️ Start your free trial — no credit card required!
🎁 Start Free 30-Day Trial

💎 Massive Value — Free All Year & Pay What You Like

We've spent 7 months building a platform filled with real value. To celebrate our 15th birthday, the entire experience is free for the rest of the year — no limits and no paywalls.

If you'd like to support the project, you can pay what you like, starting at $1/month or $10/year. Every contribution helps us improve the platform and keep it fully accessible for everyone.

Log in now for full access — and support the project if it feels right.

Learn more about how we build and support ocean education →
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