Studies have shown that eating plenty of fish is healthy for pregnant women and their babies. But mercury can harm the developing brain of a baby whose mother eats too much contaminated fish ...

While most fish reproduce by laying eggs, some species are live-bearing, or viviparous, and carry their offspring internally.

If a baby fish manages to avoid being eaten and to find ... “If you miss an island, good luck with that. If there’s no reef, you cannot complete your life cycle,” Sponaugle says.