That’s the term I would give. Snail mail is the term for the slow normal land-based mail. Nudibranch is a type of sea slug, a relative of the land snails.
I posted this card at Malaysia’s only underwater post office at Mataking Island on the penultimate day of the Celebes Safari 2007 back in November 2007 (Saturday – 24th November 2007). I received the card on the 22nd January 2008. Almost 2 months later.
The front of the card depicts a Pygmy Seahorse, common to the Tun Sakaran Dandai Marine Park
The postage stamp and post office stamp
The message I wrote at the back
At least it arrived – although frankly I had lost hope
SeaDemon Says 