…occupy oneself suddenly and enthusiastically with (a meal, or an engrossing subject or activity)…
…(of a submarine) dive rapidly and steeply to a deeper level in an emergency…
…a dive performed with one’s arms outspread until close to the water…
…use one’s ingenuity to deal with or evade a situation…
…a jump into water feet first with the knees clasped to the chest…
