For sea fishing, choose a rod based on the specific type of sea fishing you're doing. For shore or surf fishing, opt for a longer rod (around 3 to 4 metres) for better casting distance. For boat fishing, a shorter, sturdier rod (1.8 to 2.4 metres) is preferable for better control. Look for rods made from durable, corrosion-resistant materials like graphite or fibreglass.