Blue / Teal Tentacle Magnifica
A variant of Magnificent anemone (Heteractis magnifica)

Representative Magnificent anemonephoto — a dedicated image of this exact morph isn't available yet.
Tentacles flush blue or teal under actinic-heavy lighting; an uncommon and striking wild form.
Keeper tips for this variant
The blue is largely a fluorescent response — run heavier blue/actinic spectrum to pop the color, but never compromise on total intensity, which this species absolutely requires.
Other Sea Anemones variants
Purple baseGreen/tan tentacle formsStandard Tan / Brown MagnificaGreen MagnificaPurple-Base (Purple Foot) MagnificaRed / Rose MagnificaYellow / Gold MagnificaPurple-Base Magnificent AnemoneGreen Magnificent AnemoneRed / Maroon Base Magnificent AnemoneRainbow / Multicolor Magnificent AnemonePurple Tip RitteriGreen Tip Ritteri (Purple Base)Yellow Tip RitteriRed-Tipped RitteriRed / Red-Magenta Base Rainbow RitteriUltra Purple Neon Yellow Tip (Aquacultured)Starry Night Ritteri