The Books Insiderindependent audiobook data
The Girl Beneath the Sea by Andrew Mayne

The Girl Beneath the Sea: Audiobook

Book 1 of the Underwater Investigation Unit series

According to The Books Insider's catalog data, The Girl Beneath the Sea runs 9.3 hours as an unabridged audiobook, narrated by Susannah Jones (about 6.2 hours at 1.5× playback speed).

9.3listening hrs
Police & Detectivestore shelf
2020released
Free for new listeners

The instrument When will you finish it?

Based on 9.3 hours of listening.

Days to finish The Girl Beneath the Sea at common listening paces
Your paceYou'll finish in
30 min / day19 days
1 hour / day10 days
2 hours / day5 days
1 hour / day at 1.5×7 days

Part of The Audiobook Finish-Time Calculator: the same instrument for any audiobook we measure.

What our data says

  • At 9.3 hours, it runs longer than 62% of the 22,296 Police & Detective audiobooks in our catalog.

Catching up on Underwater Investigation Unit

This is book 1. Books 1 to 5 run 42.1 hours in all.

BookTitleLength
1The Girl Beneath the Sea9.3 hrs
2Black Coral9.2 hrs
3Sea Storm8.1 hrs
4Sea Castle8 hrs
5Dark Dive7.6 hrs

About as long, on the Police & Detective shelf

6,102 Police & Detective audiobooks in our catalog run within 10% of this length. The most popular on the store:

Computed from 409,794 English-language unabridged audiobooks in The Books Insider catalog (store data read November 3, 2026). Lengths are the store's own running times. Methodology.

About this listen

The Girl Beneath the Sea is book 1 of Andrew Mayne's Underwater Investigation Unit series: a 9.3-hour unabridged recording, read by Susannah Jones, released May 1, 2020, on the Police & Detective and Action & Adventure (Fiction) shelves.

The listen at a glance

Length
9.3 hrs
Narrated by
Susannah Jones
Released
May 1, 2020
Format
Unabridged audiobook
Language
English
Store shelves
Police & Detective, Action & Adventure (Fiction)
Series
Underwater Investigation Unit #1
ISBN
9781799754794

How to listen to The Girl Beneath the Sea free

New members at audiobooks.com get three free audiobooks with the trial.

Separately, the store's catalog carries more than 10,000 audiobooks that are always free to stream.

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Questions listeners ask

How long is The Girl Beneath the Sea as an audiobook?

The Girl Beneath the Sea runs 9.3 hours unabridged. At 1.5× speed that drops to roughly 6.2 hours.

Is The Girl Beneath the Sea free as an audiobook?

Yes, for new listeners: the trial starts you with three free audiobooks.

Who narrates The Girl Beneath the Sea?

The Girl Beneath the Sea is narrated by Susannah Jones.