Dolphins are saying Aloha. How does your language give greetings?

Spending thousands of hours underwater with dolphins allowed them to teach me they are greeting us. They use sounds, body language and bubbles to convey greetings to each other and other cetacean species, as well as us.
Aloha is the greeting from one of the most oceanic human cultures ever known to exist, the Polynesians. So I think Hawaiian is perhaps one of the most appropriate human languages to use to translate the word for “greetings” or “welcome” from these finned ocean navigators.