
Haddon's Saddle Carpet Anemone (Stichodactyla_haddoni)
Is an anemone that can reach up to 50 cm in diameter and exists in many colors: green, orange, tan, stripped with grey etc. Its many short tentacles give it a "plush carpet" appearance, thus the name Carpet Anemone.
Tropical sea anemone hosting a variety of fishes, shrimps and crabs.
Here we can see a young anemone has been claimed by a family of skunk anemone fishes (Amphiprion polymnus) and a family of porcelain crabs (Neopetrolisthes maculatus).
Ref: https://es.wikipedia.org/wiki/Stichodactyla_haddoni

Stichodactyla haddoni is a species of sea anemone belonging to the Stichodactylidae family native from the Indo-Pacific area.