Bushes in the mangroves

Ximenia americana

This shrub can grow quite tall, with fluffy white flowers that turn into oval fruits that ripen to yellow.
Sea holly (Acanthus sp.)

Common low shrubs often growing on mudlobster mounds. Some leaves may not be so spiky, an a single plant may have spiky and non-spiky leaves.
The flowers may be white with blue or purple tinges, developing into cylindrical fruits.