Sharks are involved and decisive. They are very much into being individuals who are not part of the group and who definitely operate in their own interest. Being involved takes the form of being extremely alert, aware of what is going on, and prepared to act quickly and efficiently. Decisiveness is a major characteristic, with sharks being able to make a decision and act on it without hesitation or second guessing.
Seals are helpful and playful. They are definitely part of the group and social participation is a high priority for them. They like being helpful, doing things for and with others, and making things work out well for everyone. They also have an ability to be helpful in a fun way, with playfulness being one of their primary characteristics.
That leaves buttheads. Well, for that you will need to press play and find out first hand. It may surprise you.