1. Full of submerged reefs or sandbanks or shoals
   - reefy, shelvy, shoaly

See also: shallow, shelf

• family Mantispidae
• family Marantaceae
• family Marattiaceae
• family Marchantiaceae
• family Marsileaceae
• family Martyniaceae
• family Mastodontidae
• family Mastotermitidae
• family Mayacaceae
• family medicine
• family Megachilidae
• family Megadermatidae
• family Megalonychidae
• family Megalosauridae
• family Megapodiidae
• family Megatheriidae
• family Melampsoraceae
• family Melanthiaceae
• family Melastomaceae
• family Melastomataceae
• family Meleagrididae
• family Meliaceae
• family Meliphagidae
• John Cabot
• John Cage