Identify Your Eggcase

Eggcase Identification © Shark Trust.Use our Eggcase ID Key to help you identify which species of eggcase you have found.

In the first instance, eggcase size is a quick way of discounting the eggcases you have not got. When you have reduced the number of choices, read the key identification points for your remaining species to determine which eggcase(s) you have. Use the individual characteristics for each species listed on the Eggcase Species pages to make a definitive identification.

Please Note:

All eggcase sizes relate to soaked eggcases, as they expand considerably when soaked.
All sizes are approximate and as our data set increases in size more accurate sizes will be revealed.