It is common knowledge that the crown-of-thorns starfish is the bane of coral reef communities. What is lesser known is that this species does not feed on only corals. Rather, in its juvenile stage, it feeds on algae. Then, as it matures into an adult, it will switch to a diet of corals.
Based on new research reported in the Biology Letters journal, the starfish has the ability to adjust the timing of its dietary change based on the availability of coral in the vicinity.
With the loss of at least 90 percent of sharks worldwide, it would seem to be urgent to protect the ones that remain. Every global study of their status has reported a more dire situation than the last, and that the targeted hunt for the shark fin trade is responsible for their catastrophic depletion.
Reviewed by Michael Lawrence
Generally speaking, underwater photography falls into several well-defined categories. Wide-angle reef scenics with or without divers, over-under images, fish portraits, macro and super macro. With his new book, Song of Silence, Rico Besserdich shatters that construct. While skilled in all of the standard approaches to underwater imaging, Rico has chosen to focus on the essential, elemental spirit of water and its boundless faces.