Knobby Starfish, Pentaceraster cumingi, Baltra Island, Galapagos, Ecuador

Knobby Starfish, Pentaceraster cumingi, Baltra Island, Galapagos, Ecuador

Crown of Thorns and Knobby sea stars.USA, Channel Islands, CA

Knobby sea star & Corynactus anemones. USA, Channel Islands, CA

Knobby sea star and urchin group. USA, Channel Islands, CA

Gathering of Knobby Star Starfish (Pentaceraster cumingi) on sandy ground in front of a reef, Cousin Rock, UNESCO World Heritage Site, Galapagos archipelago, Ecuador, Pacific Ocean

Gathering of Knobby Star Starfish (Pentaceraster cumingi) on sandy ground in front of a reef, Cousin Rock, UNESCO World Heritage Site, Galapagos archipelago, Ecuador, Pacific Ocean

Oak trees (Quercus robur) in Hudewald forest, Borkener Paradies nature reserve, Emsland region, Lower Saxony, Germany, Europe

Utah Juniper (Juniperus osteosperma), growing between rocks, Grand Canyon, Arizona, USA, America

A rock climber scaling the knobby granite walls in Tuolumne Meadows, Yosemite National Park, California