How to soften and unfold a dry and folded sea fan

[kai]

Greetings!

I bought a large dried sea fan some time ago, but I haven't framed and hung it yet because one third of the fan is folded over.  The sea fan is delicate and I'm afraid that 1) it may break if I attempt to flatten it out and 2) if I am somehow successful with unfolding it will be creased.  I read a posting about soaking a sea fan in alcohol to "cure" it and get rid of the smell - however I don't know if this will soften the fan adequately and allow for me to unfold it and dry it perfectly flat withough doing damage?

I'm looking to this knowledgeable community for assistance and appreciate any tips that can help get a successful result!

Thank you in advance for your help!
Erica