Distinct from other aggressive NPCs, the Sea Beast's health is influenced by the player count near its spawn location and it's only susceptible to special moves, with immunity to M1 attacks, barring a few exceptions. It can appear in the Second and Third Sea under specific conditions and exhibits a range of colors. The Tide Keeper has the capability to spawn Sea Beasts, which, despite having less health, inflict equivalent damage but yield no rewards when defeated.