To Yerseke by train

If you travel by train from Brussel Airport, choose the Intercity to Antwerp, at Antwerp CS switch (if needed) to Roosendaal (NL). At the Roosendaal railway station switch to Kruiningen-Yerseke. 
If you travel from Amsterdam, choose the Intercity train Amsterdam-Roosendaal-Vlissingen. Get out at the Kruiningen-Yerseke railway station and take the bus to ‘Langeville’ (or pick a taxi).
If you reach the bus stop ‘Langeville’, get out and walk towards the harbour. The Royal NIOZ is located at the Korringaweg, parallel to the banks of the Easter Scheldt.