yes, the spear that is their snout / nose is functional. as one of the fastest fish in the water, blue marlins slash their way through schools of fish and return to collect their prey right after. though they do dive into deeper waters to feed on squid and such things, they prefer warm, tropical waters. this means lots of surface-ish water swimming which also makes them more susceptible to being fished by sport fishers. it’s crazy that anyone can fish for such large animals though. blue marlins get to about 14 feet in length and nearly 900 kg. they are highly prized as fishing trophies though and are becoming more endangered because of it. makaira nigricans in moleskine.