1. The bulb sea squirt is a colonial sea squirt, from the transparent coat can see its internal yellow and white organs, it looks like a light bulb, the name of the bulb sea squirt comes from this. They are mostly found along the Norwegian coast, but they are widely distributed in the Atlantic, North Sea, English Channel and Mediterranean Sea. They are often loosely packed together, their shape is cylindrical, 4 cm long, and they grow violently in the harsh winter and are revived in the summer.
2. Christmas tree worm - The Christmas tree worm is very small and is a kind of tube worm. These fascinating corals come in many colors, yellow, orange, blue, and white, and are widely distributed in tropical oceans around the world. The worm's colored spiral is actually a high-density breathing structure, it does not have auxiliary limbs dedicated to movement and swimming, and cannot swim outside the tube. They have two beautiful crowns that make them look like Christmas trees, hence the name. These crowns are actually their mouths, very sensitive, even the shadow of them will react immediately. Tubes are their homes.
3. Bubble coral - very beautiful, immovable water will appear a lot of bubbles, bubble coral name is how it came. They need light to expand and expand, and when they open during the day, they look a lot like bubbles, pearls, or grapes. When deflated, you can see that they have a hard skeleton. These corals are very fragile and crumbling when touched, so be sure to be careful with their tentacles when handling and collecting them. Bubble corals are mainly distributed in the Red Sea, Indian Ocean and Pacific Ocean.
4. Large flower brain coral – has an oval heavy frame with a conical chassis. Also known as stacked-brain corals or pit corals, they are large hydra-bodied polyps. This beautiful coral comes in red, yellow, brown, green and blue. They are shaped like the number 8 or a clock. At night, you will spit out tentacles in your mouth to protect yourself. They are about 80 mm long and have 2 or 3 mouths. Survives through photosynthesis and does not require feeding. Red requires less light than green. It's easy to collect such corals because they like to stick to reefs, shells, and dead corals.
5. Cup corals – Cup corals are beautiful corals from the deep sea. They are not species that grow on the reef, but live on zooplankton. At night, they protrude their translucent tentacles. Cup corals are widely known as the flower of the ocean and are also known for their vivid colors and shapes. Their most common shapes are cups and plates.
6. Leather mushroom coral - Leather mushroom coral belongs to the soft coral family, other common names are green mushroom coral, umbrella coral, elephant ear leather coral. Like other corals, they come in many colors, including brown, cream, and deep red. This beautiful mushroom coral looks like folded leather, and at night and when eating in the water, they reveal peduncle-like tentacles. They are colonies of marine animals, and marine life provides them with nutrients.
7. Finger coral - is a good-looking coral that looks like a finger, with many names, such as finger leather coral, Nobby finger leather coral, devil's hand coral, kale leather coral and so on. They come in a variety of colors, such as brown, brown, yellow, green, pink, and gray. They originally belonged to the Indian and Pacific Oceans. These unique corals, 1-2 inches in size, draw nutrients from an algae that resides inside the coral and survives through photosynthesis. They also draw nutrients from tiny plankton. Their appearance depends mainly on the strength of the currents.
8. Feather Duster Worm / Tube Dwelling Worm - The Hairy Duster Worm resembles an old-fashioned feather duster, except for the head, all other parts are in a tube where sand is deposited. The tubes on the worm's head have two crowns and are the organs that feed it breathes and eats. These things hidden in the tube are small, but sensitive and can detect danger. Beautiful red, orange or brown sponges roaming around the worms also add a touch of beauty to them.
9. Tiger Ear Mushrooms – These mushrooms are like the paint in the painter's paint plate scattered in the ocean, they have fascinating colors, red, orange, purple and green. The red tiger ear mushroom is the rarest and most precious. Tiger ear mushrooms of different colors require different care. The green tiger ear mushroom is a type of mushroom coral with spots on its surface, which is a vibrant green color. The red tiger ear mushroom is more exotic, more precious, beautiful and gorgeous. They are sensitive and not as hard as other species of coral. Care must be taken when handling them, as small travettes of the red tiger's ear mushroom can also lead to bacterial infections.
10. Clove Hydra Body – Also known as gloved Hydra body, it has eight tentacles. These stunning hydras are found in the Indian and Pacific Oceans and are available in brown, red, pink, white and green. The small ones are clove hydras, while the large ones are usually used as gloves for hydras. Regardless of size, they have eight tentacles. They depend on iodine, bran shrimp shrimp, planktonic microorganisms and trace elements, usually in swarms and require moderate amounts of light. They can develop and grow rapidly on coral reefs and rocks.