When Current began to direct where the ships were removing, things were clearly more dangerous. All the aquatic forces had already retreated. This was for their safety. But the wind mages and other related skill users were focusing on the added dangers.
The steam was full of toxic poison from the bubbling waters. The magma that was cooling rapidly beneath the ocean salt water was filled with too much. While it could be useful in some instances, this sort of thing was not at all what anyone had expected.
Walker had to focus on the wind as well. He used his manipulation to cause fresher air to blow down from the higher sky where the clouds were. This was assisted by Ventus who did the same for multiple ships. Their teamwork proved to be a blessing to those who were unable to do anything due to their own affinities.