This is the 8979th most frequent Japanese word.
沖中
"沖中" (おきなか) refers to the middle of the open sea.
In this sentence, '沖中' refers to being in the midst of the ocean or sea, emphasizing the location and environment.
沖中で海の風を感じるのが好きです。
I like feeling the ocean breeze while being in the midst of the sea.
Here, '沖中' describes the open sea area where the dolphins' ecological behaviors are researched.
彼は沖中のイルカの生態を研究しています。
He is studying the ecology of dolphins in the open sea.
In this context, '沖中' indicates the central area of the sea, specifically the destination towards which the ship is moving.