iPhone Screenshots


The Great Eggcase Hunt is a Shark Trust citizen science recording project aiming to discover where different species of sharks and skate lay their eggs (which are protected in a toughened ‘eggcase’ or ‘mermaid’s purse’).

Get involved by heading to the beach in search of eggcases and use the app to identify what you’ve found. Report your mermaid’s purses to the global Great Eggcase Hunt or, if in the Netherlands, to the Dutch Shark Society’s ‘Grote Eikapsel Jacht’.

Key features of the app include:
• Advice on how best to prepare eggcases for identification
• Encyclopedia of egglaying sharks and skate commonly encountered in Northwest Europe
• Species ID guides
• Step-by-step identification tool for eggcases in Northwest Europe
• Recording form with access to GPS location and ability to take and upload photos
• User profile and logbook keeps track of your finds submitted via the app
• Capacity to change between English and Dutch for region/language

Established in 1997, the Shark Trust is the UK registered charity dedicated to safeguarding the future of sharks through positive change. It does this through science, education, influence and action.

What's New

Version 1.3.0

- Added support for Dutch region/language
- improved support for new iOS versions

Ratings and Reviews

Awesome app!!!!


This is a clean, attractive, functional app. It is easy to use and the ID section is amazing! I highly recommend The Great Eggcase Hunt, and wish more citizen science apps were as useful and well thought out as this app.


The Shark Trust
66.1 MB
Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.
English, Dutch
Age Rating
Rated 4+
© 2014, Shark Trust


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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