Devil's Hand Leather (Lobophytum)
A variant of Toadstool leather coral (Sarcophyton sp.)

Representative Toadstool leather coralphoto — a dedicated image of this exact morph isn't available yet.
A finger-lobed leather often sold alongside toadstools; the cap forms thick digit-like projections rather than a smooth mushroom cap.
Keeper tips for this variant
Hardy and undemanding — give moderate flow to keep detritus off the lobes; it also benefits from a weekly slough cycle, so don't be alarmed when it closes up.
Other Soft Corals variants
Green polyp toadstoolYellow Fiji leather (Sarcophyton elegans)Green ToadstoolToxic Green ToadstoolNeon/Green Polyp ToadstoolSpaghetti / Long-Polyp ToadstoolRed/Maroon ToadstoolWeeping Willow ToadstoolYellow Fiji ToadstoolGreen Polyp / Neon ToadstoolTyree Green ToadstoolORA Neon Green Polyp ToadstoolORA Lemon Lime ToadstoolYellow Fiji Toadstool (Sarcophyton elegans)Japanese Toadstool (Neon Green)Toxic Green Weeping Willow ToadstoolCornbred's Japanese Blue Tip ToadstoolBIOTA White Polyp ToadstoolWhite Tip Toadstool