Can anyone help identifying this organism or egg case in the beaches of Kerala, India?

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Ajay Pathak

Dear Biju Kumar Sir,

Probably belonging to Phylum Echinodermata, Class Holothuroidea. Need close up photograph of individual specimen for confirmation. We had noticed similar specimen few years back in mangrove area at Ratnagiri, Maharashtra India

Dhananjay Ashok Desai

Probably its a sea cucumber.

Monalisha Sundar Raj

Looks like egg case of Polychaete worms, may be from family Arenicolidae.

A closer picture will be helpful for identification Sir.