When diving or spearfishing, as authorized in Section 28.90, all species may be taken and/or possessed year−round (See subsection 27.50(b)(2) for exceptions in the Cowcod Conservation Areas). When boat−based groundfish fishing is closed, all types of fishing gear, except spearfishing gear, are prohibited to be aboard the vessel or watercraft (motorized or non−motorized) when taking and/or possessing these species under this provision.