Eggcases Underwater

Underwater Eggcases © Linda Pitkin.Over the years, the Great Eggcase Hunt has helped improve the Shark Trust’s knowledge about the distribution of egglaying elasmobranchs. However, where eggcases are found on the beach isn’t always a true indication of where they were laid, as the sea can carry them some distance. ‘Eggcases Underwater’ is aimed at divers and asks that eggcases seen in-situ are reported, so beach records can be linked with actual egg-laying grounds. This also aims to get more detailed information about the specific areas that skates and catsharks use as nursery grounds, as well as the types of substrate that different species lay their eggs on.

So if you’re spending time underwater this year, keep an eye out for eggcases which are waiting to hatch.

Eggcases are more difficult to find underwater, as they are often camouflaged with seaweed, sand and gravel, but if you do happen to spot one this can be indicative of a shark, skate or ray nursery area. If we know where these areas are then we can better protect these species from practices such as bottom trawling, dredging and spoil dumping. 

To report your findings you can submit details and images here.

Important:

Please remember not to disturb underwater eggcases, as they contain a live shark, skate or ray which may have been incubating for up to 12 months.

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