There are no flowers under the sea, because flowering plants use pollination to reproduce (which means the sperm travels through air, not water).
You may be thinking of some animals that look like plants. Popular examples include Cnidarians (for example, the sea anemone and coral polyps) or Bryozoans (called 'moss animals' because they look like little plants).
Blue is not a common color for flowers. Bluebells, squill, lobelia, iris, spiderwort, forget-me-not, and wild flax.
The plant you're referring to is likely Eryngium, commonly known as sea holly. Eryngium plants are known for their spiky metallic blue flowers that resemble teasel. They are drought-tolerant and can make striking additions to garden landscapes.
It is likely sea thrift, also known as Armeria maritima, which is a coastal plant with greenish white flowers.
A sea anemone is a marine creature that looks like a plant but is actually a predatory animal related to jellyfish and corals. Sea anemones are known for their colorful appearance and tentacles that they use to capture prey.
An example of mutualism is the relationship between bees and flowers. Bees receive nectar and pollen from flowers for food, while in return, bees transfer pollen between flowers, aiding in pollination and the reproduction of plants. Both organisms benefit from this interaction.
Sea Weed is under the sea but I'm not sure what else
A sea anemone.
'umi no hana.'
turtles and flowers and slat water
Coastal areas often have flowers like beach rose, sea lavender, and beach morning glory that can thrive in salty conditions and sandy soil.
place, plaice to, two see, sea flowers, flours
Blue is not a common color for flowers. Bluebells, squill, lobelia, iris, spiderwort, forget-me-not, and wild flax.
Sea Holly
There are Pineapples, some flowers and some sea shells
Some examples of flowers that grow on the beach include beach morning glory, sea rocket, and beach sunflower.
The likely word is the plural noun anemones (a type of flowers, or of sea creatures).
2 love berries and a dragon fruit