Visited Tsilivi in August 14. We did both boat trips Levante have on offer and wouldn't hesitate to recommend either one! There are 30 odd seats on the boat and thats the number of people that get booked on, none of the ridiculous overcrowding that we have experienced on previous trips.Captain Spiros is extremely knowledgeable about the coastline and is very experienced in the way he handles his boat. We sat up at the front and it was a fabulous experience!! On the turtle trip he and his crew had no problem finding a turtle and manipulating the boat for the 20 odd minutes it took for the turtle to surface. We saw some fabulous scenery and experienced some wonderful beaches on both trips. For the shipwreck trip he promises to get you there before anyone else and he does, before the crowds descend and its impossible to get photos without a bunch of strangers in them! He will also stop the boat at various points just to point something out or for a good photo opportunity. We booked with the wonderful Sue and Adelies on the main strip (next to Obelisk Restaurant) but i believe there are a couple of other places as well. Just beware of other trip organisers trying to fob you off saying their trip is with Captain Spiros, its not! The only way to book is via the offiical Levante guys, you will know them either from the signage outside the shop or the beige t shirts with the Levante logo.Levante do cost more than the other trips but we all save hard for our holidays and its worth putting our money to the best use possible rather than wasting it on a trip thats not enjoyable, been there, done that and have learnt over the years!