Alter Self Regular fit The target can be a

The target can be a willing creature or an object that isn't being carried or worn by another creature

Each target must succeed on a Wisdom saving throw or be affected by this spell for the duration

frog (toad)

for results that aren't especially good or bad

the fabricated object can be no larger than Medium (contained within a single 5-foot cube)

Alter Self Regular fit The target can be aYou assume a different form. When you cast the spell, choose one of the following options, the effects of which last for the duration of the spell. While the spell lasts, you can end one option as an action to gain the benefits of a different one. Aquatic Adaptation. You adapt your body to an aquatic environment, sprouting gills and growing webbing between your fingers. You can breathe underwater and gain a swimming speed equal to your walking speed.