Nets

Why is getting caught in a net such a problem for a dolphin?
Some fisheries use nets with very thin mesh which may be difficult for a dolphin to detect. Perhaps such materials don't produce an echo and so it cou...
Why have drift nets been banned by most countries?
Reaching up to 50km in length and 50m in depth, drift nets – typically made of fine mesh suspended from buoys across fish migration paths – were banne...