BBC Knowledge April 2017

A young golden

damselfish hides among

the branches of a red whip

coral in Misool, Indonesia.

The species shelters

here for protection from

predatory fish such as

groupers, snappers

and lionfish.

The camera was rotated

during this long exposure

of a yellow tube sponge

in the Caribbean Sea,

Cayman Islands. In order

to obtain food, sponges

pass water through their

bodies in a process known

as filter-feeding. Water

is drawn into the sponge

through incurrent pores.

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NATURE

70 78 April 2017April 2017