# BlueDen - Ocean Aquarium — Relax with sea life sounds

> Relax with sea life sounds (iPhone/iPad app by Naoki Hasegawa.)

- Source: https://appshunter.io/ios/app/blueden-ocean-aquarium/id6772455459 (this page in markdown: same URL + `.md`)
- Developer: [Naoki Hasegawa](https://appshunter.io/developer/6772061389)
- Category: Entertainment, Lifestyle
- Price: Free
- Age rating: 4+
- Requires: iOS 15.1 · 67 MB
- Languages: English
- Released: 2026-06-01
- Data updated: 2026-06-25
- User reviews in markdown: https://appshunter.io/ios/app/blueden-ocean-aquarium/id6772455459/reviews.md

## What is BlueDen?

BlueDen is a calm 3D ocean aquarium for relaxing with dolphins, whales, orcas, sharks, fish, and gentle underwater ambience.

Enjoy the feeling of looking into the sea, a quiet diving window, or a small deep-sea world on your screen. Adjust the number of sea creatures, listen to soft ocean sounds, and keep a soothing underwater view nearby while you work, rest, focus, or wind down before sleep.

BlueDen is made for quiet moments: a virtual ocean, a sea-life viewer, and a relaxing ambient companion rather than a game or a biological reference app.


## Version history (last 3 releases)

### 1.0.2 — 2026-06-16

Updated the App Store listing and screenshots for BlueDen. The calm 3D ocean aquarium experience remains the same.

### 1.0.1 — 2026-06-02

Updated the App Store listing and screenshots for BlueDen. The calm 3D ocean aquarium experience remains the same.

### 1.0.0 — 2026-06-01

No release notes.

## More apps by Naoki Hasegawa

- [Pitch Lab - Baseball Simulator](https://appshunter.io/ios/app/pitch-lab-baseball-simulator/id6772455650)
- [Shukan - Habit Time Planner](https://appshunter.io/ios/app/shukan-habit-time-planner/id6772463181)

All apps by Naoki Hasegawa: https://appshunter.io/developer/6772061389

## Related topics

[blunami](https://appshunter.io/ios/topics/blunami) · [tobi blue](https://appshunter.io/ios/topics/tobi-blue)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-25.*