海底

seabed / seafloor / bottom of the ocean

surname Hai

ocean / sea / CL:個|个[ge4],片[pian4] / great number of people or things / (dialect) numerous

(equivalent to 的 as possessive particle)

background / bottom / base / end (of the month, year etc) / remnants / (math.) radix / base

Haidilao (aka Hai Di Lao), hot pot restaurant chain founded in Sichuan in 1994

see 水中撈月|水中捞月[shui3 zhong1 lao1 yue4]

see 大海撈針|大海捞针[da4 hai3 lao1 zhen1]

seafloor spreading (geology)

theory of seafloor spreading (geology)

coco de mer or "sea coconut" (Lodoicea maldivica)

muladhara, the root or Saturn chakra, residing in the coccyx