Comments : Seahurst Park is ideal nudibranch territory as the bottom is muddy and slopes gently. During certain times of the year, Seahurst Park boasts some of the largest nudibranchs I have seen in Central Puget Sound. Alabaster Nudibranchs often range in color from pure white (like this example) to a peach-orange color. The bright white tips (cerrata) are actually the animals gills.