The Sea Brothers Zords are a trio of submarine style Zords that are composed of the Manta, Sawshark and Hammerhead Zords. They were the first set of auxiliary zords that the Rangers gained. They are called on by using the Seaick Brother Power Card. They can combine onto Gosei Great Megazord to form the Sea Gosei Great combination of Sea Megazord. Later on, smaller versions were used to upgrade the Mega Blasters. When all three are used on Mega Blasters alongside one with the Shark Zord, the group attack is Sea Blast.