According to forum posts, fast boats to Nusa Lembongan depart from Sanur, Bali, with some companies offering pickup services from places like Legian. The crossing duration is typically half an hour. Travelers have also mentioned that there are fast boat services provided by companies like Scoot and Baliekajaya, which also operate routes from the Gili Islands and Nusa Penida to Nusa Lembongan.

Some travelers have discussed less conventional boat options such as local boats from Crystal Bay on Nusa Penida to Mushroom Bay on Nusa Lembongan, although these are not scheduled and prices may vary. The local boat transfer from Toyapakeh to the Yellow Bridge on Nusa Lembongan costs about IDR 50,000, but these boats only leave when there are enough passengers.

For those starting from Lombok, the journey involves a transfer to Bangsal followed by a fast boat to Nusa Lembongan. Prices for fast boats like those from www.scootcruise.com are around IDR 675,000 for a single journey, which includes drop-off at accommodations on Nusa Lembongan.

According to forum posts, Crystal Bay, The Wall, and GTs are highlighted as calm and gentle drift snorkeling spots, accessible by boat and suitable for children due to their mild currents. However, the Mangroves area is noted for having strong currents, suggesting it might be less ideal for less experienced swimmers or younger snorkelers.

Some travelers mentioned that snorkeling directly off the beaches in Nusa Lembongan might not offer the best conditions. For instance, Mushroom Bay is accessible from the beach for snorkeling but reportedly does not offer much to see. This suggests that while convenient, beach snorkeling might not meet expectations for those seeking vibrant underwater experiences.

Travelers have called out that organized snorkeling tours are available, which typically include spots like Manta Bay, known for manta ray sightings. However, these locations can be crowded and are subject to daily assessments by boat captains to ensure safety regarding sea conditions and currents. This indicates a need for flexibility in planning and possibly booking with reputable guides for the best experience.