Feb 21 (Reuters) - Goldsea Australia Mining:
* DEAL FOR ABOUT A$20.70 MILLION
* GOLDSEA GROUP ANNOUNCES INTENTION TO MAKE AN OFF-MARKET TAKEOVER OFFER TO BUY ALTO METALS
* UNIT ANNOUNCED INTENTION TO MAKE OFF- MARKET TAKEOVER OFFER TO ACQUIRE ALTO METALS FOR A$0.065 CASH PER SHARE