As Takeru starts to feel anxious about whether or not he can actually make a difference, Professor Kouzuki demands more concrete evidence of his knowledge about future events.
The safest thing to do would be to wipe 
them out while they're coming ashore.
.أفضل شيء أمانا يمكن فعله هو القضاء عليها بينما تكون على الشاطئ
Am sichersten wäre es, sie auszulöschen,
während sie an Land kommen.
Et donc ?
L'operazione più sicura sarebbe spazzarli via 
prima che raggiungano la riva.
O mais seguro a fazer seria eliminá-los
enquanto estão chegando à praia.
И?