Dameisha is quite a long beach, you will first see the large colourful angel statues on display. These are quite a sight. The problem with this beach is because it is free, it is actually very busy on weekends and holidays. During weekday it is fine. If a crowded beach is no problem to you, and you just want sand and sea then this beach suits your needs well. There is enough space to find a place to lie down and you can have a swim in the sea. There are toilets and changing rooms (not clean) and lots of places to buy snacks and water. If you want lunch/dinner the main strip outside the beach has tons of choices.
Public bus M191 and 103 got to both spots. You can also get a didi from city centre (around 100 RMB or so)
No. 9 Dameishayanmei Road, Yantian District, Shenzhen 518081, China.
Dameisha Seashore Park, Yantian District, Shenzhen, China
Take metro line 8 to Yantian Port West and get a taxi for 10 mins