May I humbly suggest you stick to talking about crops you know? Coconuts are unique in their salt tolerance, which is why growing them next to the ocean is ideal. Also, when they have their roots washed by saltwater regularly through wave action, they are able to take up the mineral richness of the seawater and make a much more nutritious food than otherwise. I've seen it in action in Costa Rica.
Coconuts can grow far away from the ocean, they only require alkaline soil and a humid climate. Most palms are salt tolerant. This is probably because when palms originated there was not the high organic matter level in the soil, the soils were much newer formed and much of the world was covered in shallow seas. Most of the soil probably Was salty.
Besides that, organic produce, crops and forages grown on healthy soils, can tolerate and even greatly benefit from salt including seawater and mined from ancient sea beds as well as derivatives of seawater which may contain little sodium chloride. Salt can increase yield in for ages as well as quality and increase overall health and rate of gain on livestock raised on these forages.
Coconuts can be planted in bunches and distributed to provide shade that benefits pasture growth and livestock comfort meaning livestock gains. Without producing so much shade it outcompetes grass, coconut roots penetrate deeper than the majority of the grasses roots, coexisting beneficiary. It is one of many tree crops that can be incorporated into livestock systepms and one of a few not generally consumed by livestock, though if processed can be fed to any manner of livestock to their benefit.
Coconuts I believe are the best source of medium chain fatty acids that are anti viral and antibacterial and the only other good source I know of is milk which is intolerable to some people. They are a clean source of water. I would wager coconuts save fat more human lives than the average vegetative food.