Like nature, the Earth dies and rebirths; well, parts of it do. Reincarnation is something good and spiritual to believe in. Why are we born in this form? Do our actions, our hearts form our new molds?
Your poem speaks to me of this, or at least a flavour that I can savour like memories around a camp fire. A Volcano holds the seed of birth and so new life. The fact you place yours under the sea is symbolic. Its like new life being born one fine day from the embryonic sea.
I hope we meet as hummingbirds on your new island one day.