bathing suit
bathing suit /bɑːθɪŋ suːt/
(n.) a piece of clothing worn for swimming, especially the type worn by women and girls

beach /biːtʃ/
(n.) an area of sand or small stones (called shingle ), next to the sea or a lake
Example: We are going to Sam Son beach.

boogie board
boogie board /ˈbuːɡi bɔːd/
(n.) a small board used for riding on waves in a lying position

conch /kɒn(t)ʃ/
(n.) the shell of a sea creature that is also called a conch

cooler /ˈkuːlə/
(n.) a container that keeps things cold, especially drinks
Example: They took a cooler full of drinks to the beach.

coral /ˈkɔːrəl /
(n.) a hard substance that is red, pink or white in colour, and that forms on the bottom of the sea from the bones of very small creatures. Coral is often used in jewellery.
Example: Colorful coral and tropical fish combine to make for an interesting day at the beach.

jellyfish /ˈdʒelifɪʃ/
(n.) a sea creature with a body like jelly and long thin parts called tentacles that can give a sharp sting (= a painful wound on the skin)
Example: The jellyfish is a sea animal with a soft oval almost transparent body.

life jacket
life jacket /ˈlʌɪf ˌdʒakɪt/
(n.) a jacket without arms that can be filled with air, designed to help you float if you fall in water

life preserver
life preserver /ˈlʌɪf prɪˈzəːvə/
(n.) a piece of material that floats well, often in the shape of a ring, or a jacket made of such material, used to rescue a person who has fallen into water, by keeping them above water

lifeguard /ˈlaɪfɡɑːd/
(n.) a person who is employed at a beach or a swimming pool to rescue people who are in danger in the water
Example: They need a lifeguard.

limpet /ˈlɪmpɪt/
(n.) a small shellfish that sticks very tightly to rocks