Pilot starts in the minute 3:15
Video posted by development editor Jill Calhoun on Vimeo, here, that contains the pilot. She worked on the early stages of the show, at the time, named Amphibiland as her LinkedIn account states here. I post the full video directly downloaded from Vimeo to avoid unnecessary re-encodes.
In this second video, also posted on Vimeo here, there is a storyboard of a discarded scene, an animatic, a storyboard with voice acting, sound, and on video format. The artists of the storyboard is unknown.
With this one I also post the full video directly downlaoded from Vimeo for the same reasons as in the first video. The scene starts at the start of the video.