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More Feather Stars

More Feather Stars

Marty’s photo of the day #4954: These are feather stars. Despite their plant-like appearance, they are a free-swimming animals related to sea stars and sea urchins. They use their feathery arms to filter food from ocean currents and can crawl or swim by undulating their arms. (Photographed in the Raja Ampat of Indonesian New Guinea.)

Honeycomb Grouper

Honeycomb Grouper

Marty’s photo of the day #4953: This is a honeycomb grouper. They are protogynous hermaphrodites that start out as females and change into males later in life. Living up to 50 years, they spawn on nights surrounding the full moon, with eggs released into open water. (Photographed in the Raja Ampat of Indonesian New Guinea.)

Who Are You?

Who Are You?

Marty’s photo of the day #4951: This is a school of blackspotted snappers. The apparent attitude of one near the bottom, looking directly into my camera, cracks me up: “Who are you, and what is that thing in your hand?” (Photographed in the Raja Ampat of Indonesian New Guinea.)

The Changing Golden Spadefish

The Changing Golden Spadefish

Marty’s photo of the day #4949: Golden spadefish undergo significant physical changes as they age. Juveniles have long, crescent-shaped dorsal and anal fins, while adults have shorter, rounded fins and a spade-like body. An interesting behavior is that juveniles sometimes float sideways, mimicking dead leaves, to hide from predators. Adults, like the one in this […]

Flagtail Triggerfish

Flagtail Triggerfish

Marty’s photo of the day #4948: This is a flagtail triggerfish. There are about 40 species of triggerfish. They get their name because they can lock their main dorsal spine into an upright position using a second, smaller spine, allowing them to wedge themselves into tight, rocky crevices to prevent predators from pulling them out. […]