|“||After that intro, I’ll bet you can’t wait to hear their first song, Seasick. This little number features the hard-rocking riffs and heavy metal vocals that Ikkan sometimes used in the Squid Squad’s songs. Listen as the electric rhythms stitch their threads between the driving bass beats in this banging battle backdrop.||”|
Seasick is one of the four multiplayer songs released in Splatoon 2 Version 4.1.0. Like all battle songs, it has a random chance of being played during online matches. Seasick starts with a brief bass and synth intro, leading to an electric guitar with a rising pitch, and loops back to the bass and synth intro, adding fierce percussion. After this, it moves into the verse, which features Ikkan singing in tones sometimes heard in Squid Squad songs. After the verse, the synth notes and Ikkan perform in turns, eventually performing together, thus building the tension, followed by a brief in-between section. During this, an electric guitar takes the melody, with punctured synth notes in the background. After this is the chorus, with the keyboard being the melody. The bass still plays strong in the background. After this, the song loops. It can also be heard in Squid Beatz 2 with maximum scores of 168 and 450 in Normal and Hard modes respectively. In Splatoon 3, this song can sometimes play in the Battle Lobby.
Seasick is based on the concept of seasickness, a type of illness that serves as a body's reaction to the unfamiliar movement of a boat.