Can we eat seaweeds, ferns, and mushrooms biblically? Leviticus 11

Can we eat seaweeds, ferns, and mushrooms biblically? Leviticus 11

Summary: If they are clean & safe, Yes. Manna, yeast, and salt, are some things that don't fit it Lev 11's descriptions of clean animals, clean seafood, or fruit and seed bearing plans.

Confusions:

• Seaweeds
• they are from the sea and rivers, but don't have fish and scales.
• Mushrooms
• they are not even plants
• Ferns
• they are plants but they are not seed-bearing or fruit-bearing, but multiply by spores

Solutions:

• Manna
• these are not plants w/c are fruit/seed bearing
• they are also not from the sea w/ fins and scales
• they also don't have characteristics of clean animals
• Yeast / Leaven
• these are not plants w/c are fruit/seed bearing
• they are also not from the sea w/ fins and scales
• they also don't have characteristics of clean animals
• "A moderate amount of milk and sugar, and a little salt, white bread raised with yeast for a change, graham flour prepared in a variety of ways by other hands than her own, plain cake with raisins, rice pudding with raisins, prunes, and figs, occasionally, and many other dishes I might mention, would have answered the demand of appetite. If he could not obtain some of these things, a little domestic wine would have done her no injury; it would have been better for her to have it than to do without it. In some cases, even a small amount of the least hurtful meat would do less injury than to suffer strong cravings for it."  {2T 383.4} 
• Salt
• these are not plants w/c are fruit/seed bearing
• they are also not from the sea w/ fins and scales
• they also don't have characteristics of clean animals
• Mushrooms
• currently are classified as fungi (not plants, not animals)
• "The fungi (singular, fungus) once were considered to be plants because they grow out of the soil and have rigid cell walls. Now they are placed independently in their own kingdom of equal rank with the animals and plants and, in fact, are more closely related to animals than to plants." https://www.cliffsnotes.com/study-guides/biology/plant-biology/fungi-not-plants/a-kingdom-separate-from-plants
• Ferns
• "And to every beast of the earth, and to every fowl of the air, and to every thing that creepeth upon the earth, wherein there is life, I have given every green herb for meat: and it was so." Gen 1:30

What others say:

http://perspectives.adventist.org/en/questions-answers/questions/go/2016-03-19/does-god-permit-us-to-eat-mushrooms/